diff --git a/.circleci/config.yml b/.circleci/config.yml
index eedc286a5a5f2..a1c381186416f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,7 +3,7 @@ version: 2.1
 jobs:
   lint:
     docker:
-      - image: cimg/python:3.8.12
+      - image: cimg/python:3.9.18
     steps:
       - checkout
       - run:
@@ -18,7 +18,7 @@ jobs:
 
   doc-min-dependencies:
     docker:
-      - image: cimg/python:3.8.12
+      - image: cimg/python:3.9.18
     environment:
       - MKL_NUM_THREADS: 2
       - OPENBLAS_NUM_THREADS: 2
@@ -52,7 +52,7 @@ jobs:
 
   doc:
     docker:
-      - image: cimg/python:3.8.12
+      - image: cimg/python:3.9.18
     environment:
       - MKL_NUM_THREADS: 2
       - OPENBLAS_NUM_THREADS: 2
@@ -91,7 +91,7 @@ jobs:
 
   deploy:
     docker:
-      - image: cimg/python:3.8.12
+      - image: cimg/python:3.9.18
     steps:
       - checkout
       - run: ./build_tools/circle/checkout_merge_commit.sh
diff --git a/.github/workflows/update-lock-files.yml b/.github/workflows/update-lock-files.yml
index ecf6ada399e96..4d8e98c01442e 100644
--- a/.github/workflows/update-lock-files.yml
+++ b/.github/workflows/update-lock-files.yml
@@ -17,13 +17,13 @@ jobs:
       matrix:
         include:
           - name: main
-            update_script_args: "--skip-build 'scipy-dev|^py39_conda_forge$|pypy'"
+            update_script_args: "--skip-build 'scipy-dev|^pymin_conda_forge$|pypy'"
             additional_commit_message: "[doc build]"
           - name: scipy-dev
             update_script_args: "--select-build scipy_dev"
             additional_commit_message: "[scipy-dev]"
           - name: cirrus-arm
-            update_script_args: "--select-build '^py39_conda_forge$'"
+            update_script_args: "--select-build '^pymin_conda_forge$'"
             additional_commit_message: "[cirrus arm]"
           - name: pypy
             update_script_args: "--select-build pypy"
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index b82a114bff1af..1098e8dabb9ae 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -40,7 +40,7 @@ jobs:
         name: Check build trigger
         run: bash build_tools/github/check_build_trigger.sh
 
-  # Build the wheels for Linux, Windows and macOS for Python 3.8 and newer
+  # Build the wheels for Linux, Windows and macOS for Python 3.9 and newer
   build_wheels:
     name: Build wheel for cp${{ matrix.python }}-${{ matrix.platform_id }}-${{ matrix.manylinux_image }}
     runs-on: ${{ matrix.os }}
@@ -55,9 +55,6 @@ jobs:
           # Window 64 bit
           # Note: windows-2019 is needed for older Python versions:
           # https://github.com/scikit-learn/scikit-learn/issues/22530
-          - os: windows-2019
-            python: 38
-            platform_id: win_amd64
           - os: windows-latest
             python: 39
             platform_id: win_amd64
@@ -72,10 +69,6 @@ jobs:
             platform_id: win_amd64
 
           # Linux 64 bit manylinux2014
-          - os: ubuntu-latest
-            python: 38
-            platform_id: manylinux_x86_64
-            manylinux_image: manylinux2014
           - os: ubuntu-latest
             python: 39
             platform_id: manylinux_x86_64
@@ -97,9 +90,6 @@ jobs:
             manylinux_image: manylinux2014
 
           # MacOS x86_64
-          - os: macos-latest
-            python: 38
-            platform_id: macosx_x86_64
           - os: macos-latest
             python: 39
             platform_id: macosx_x86_64
@@ -118,9 +108,6 @@ jobs:
           # Cirrus CI but due to limited build time for free accounts on Cirrus
           # CI, we build the macOS arm64 wheels for the other Python versions on
           # Github Actions via cross-compilation (without running the tests).
-          - os: macos-latest
-            python: 38
-            platform_id: macosx_arm64
           - os: macos-latest
             python: 39
             platform_id: macosx_arm64
diff --git a/README.rst b/README.rst
index ea3e088e5f180..d5f5702808955 100644
--- a/README.rst
+++ b/README.rst
@@ -32,14 +32,14 @@
 .. |Benchmark| image:: https://img.shields.io/badge/Benchmarked%20by-asv-blue
 .. _`Benchmark`: https://scikit-learn.org/scikit-learn-benchmarks/
 
-.. |PythonMinVersion| replace:: 3.8
-.. |NumPyMinVersion| replace:: 1.17.3
-.. |SciPyMinVersion| replace:: 1.5.0
+.. |PythonMinVersion| replace:: 3.9
+.. |NumPyMinVersion| replace:: 1.19.5
+.. |SciPyMinVersion| replace:: 1.6.0
 .. |JoblibMinVersion| replace:: 1.2.0
 .. |ThreadpoolctlMinVersion| replace:: 2.0.0
 .. |MatplotlibMinVersion| replace:: 3.3.4
-.. |Scikit-ImageMinVersion| replace:: 0.16.2
-.. |PandasMinVersion| replace:: 1.0.5
+.. |Scikit-ImageMinVersion| replace:: 0.17.2
+.. |PandasMinVersion| replace:: 1.1.5
 .. |SeabornMinVersion| replace:: 0.9.0
 .. |PytestMinVersion| replace:: 7.1.2
 .. |PlotlyMinVersion| replace:: 5.14.0
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 5793432e9d720..458e3ee395f62 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -191,9 +191,9 @@ jobs:
       )
     commitMessage: dependencies['git_commit']['outputs']['commit.message']
     matrix:
-      py38_conda_forge_openblas_ubuntu_2204:
+      pymin_conda_forge_openblas_ubuntu_2204:
         DISTRIB: 'conda'
-        LOCK_FILE: './build_tools/azure/py38_conda_forge_openblas_ubuntu_2204_linux-64_conda.lock'
+        LOCK_FILE: './build_tools/azure/pymin_conda_forge_openblas_ubuntu_2204_linux-64_conda.lock'
         CHECK_WARNINGS: 'true'
         COVERAGE: 'false'
         SKLEARN_TESTS_GLOBAL_RANDOM_SEED: '0'  # non-default seed
@@ -231,10 +231,10 @@ jobs:
         not(contains(dependencies['git_commit']['outputs']['commit.message'], '[ci skip]'))
       )
     matrix:
-      # Linux + Python 3.8 build with OpenBLAS
-      py38_conda_defaults_openblas:
+      # Linux + Python 3.9 build with OpenBLAS
+      pymin_conda_defaults_openblas:
         DISTRIB: 'conda'
-        LOCK_FILE: './build_tools/azure/py38_conda_defaults_openblas_linux-64_conda.lock'
+        LOCK_FILE: './build_tools/azure/pymin_conda_defaults_openblas_linux-64_conda.lock'
         # Enable debug Cython directives to capture IndexError exceptions in
         # combination with the -Werror::pytest.PytestUnraisableExceptionWarning
         # flag for pytest.
@@ -311,9 +311,9 @@ jobs:
         not(contains(dependencies['git_commit']['outputs']['commit.message'], '[ci skip]'))
       )
     matrix:
-      py38_conda_forge_mkl:
+      pymin_conda_forge_mkl:
         DISTRIB: 'conda'
-        LOCK_FILE: ./build_tools/azure/py38_conda_forge_mkl_win-64_conda.lock
+        LOCK_FILE: ./build_tools/azure/pymin_conda_forge_mkl_win-64_conda.lock
         CHECK_WARNINGS: 'true'
         # The Azure Windows runner is typically much slower than other CI
         # runners due to the lack of compiler cache. Running the tests with
diff --git a/build_tools/azure/pylatest_conda_forge_mkl_linux-64_conda.lock b/build_tools/azure/pylatest_conda_forge_mkl_linux-64_conda.lock
index 5f70ca0778b47..01448879fd3d9 100644
--- a/build_tools/azure/pylatest_conda_forge_mkl_linux-64_conda.lock
+++ b/build_tools/azure/pylatest_conda_forge_mkl_linux-64_conda.lock
@@ -36,7 +36,7 @@ https://conda.anaconda.org/conda-forge/linux-64/libev-4.33-hd590300_2.conda#172b
 https://conda.anaconda.org/conda-forge/linux-64/libexpat-2.5.0-hcb278e6_1.conda#6305a3dd2752c76335295da4e581f2fd
 https://conda.anaconda.org/conda-forge/linux-64/libffi-3.4.2-h7f98852_5.tar.bz2#d645c6d2ac96843a2bfaccd2d62b3ac3
 https://conda.anaconda.org/conda-forge/linux-64/libgfortran5-13.2.0-ha4646dd_3.conda#c714d905cdfa0e70200f68b80cc04764
-https://conda.anaconda.org/conda-forge/linux-64/libiconv-1.17-h166bdaf_0.tar.bz2#b62b52da46c39ee2bc3c162ac7f1804d
+https://conda.anaconda.org/conda-forge/linux-64/libiconv-1.17-hd590300_1.conda#4b06b43d0eca61db2899e4d7a289c302
 https://conda.anaconda.org/conda-forge/linux-64/libjpeg-turbo-3.0.0-hd590300_1.conda#ea25936bb4080d843790b586850f82b8
 https://conda.anaconda.org/conda-forge/linux-64/libnsl-2.0.1-hd590300_0.conda#30fd6e37fe21f86f4bd26d6ee73eeec7
 https://conda.anaconda.org/conda-forge/linux-64/libnuma-2.0.16-h0b41bf4_1.conda#28bfe2cb11357ccc5be21101a6b7ce86
diff --git a/build_tools/azure/pylatest_conda_forge_mkl_no_coverage_linux-64_conda.lock b/build_tools/azure/pylatest_conda_forge_mkl_no_coverage_linux-64_conda.lock
index ce0789f8ebbca..caa94bc8ef4a6 100644
--- a/build_tools/azure/pylatest_conda_forge_mkl_no_coverage_linux-64_conda.lock
+++ b/build_tools/azure/pylatest_conda_forge_mkl_no_coverage_linux-64_conda.lock
@@ -31,7 +31,7 @@ https://conda.anaconda.org/conda-forge/linux-64/libdeflate-1.19-hd590300_0.conda
 https://conda.anaconda.org/conda-forge/linux-64/libexpat-2.5.0-hcb278e6_1.conda#6305a3dd2752c76335295da4e581f2fd
 https://conda.anaconda.org/conda-forge/linux-64/libffi-3.4.2-h7f98852_5.tar.bz2#d645c6d2ac96843a2bfaccd2d62b3ac3
 https://conda.anaconda.org/conda-forge/linux-64/libgfortran5-13.2.0-ha4646dd_3.conda#c714d905cdfa0e70200f68b80cc04764
-https://conda.anaconda.org/conda-forge/linux-64/libiconv-1.17-h166bdaf_0.tar.bz2#b62b52da46c39ee2bc3c162ac7f1804d
+https://conda.anaconda.org/conda-forge/linux-64/libiconv-1.17-hd590300_1.conda#4b06b43d0eca61db2899e4d7a289c302
 https://conda.anaconda.org/conda-forge/linux-64/libjpeg-turbo-3.0.0-hd590300_1.conda#ea25936bb4080d843790b586850f82b8
 https://conda.anaconda.org/conda-forge/linux-64/libnsl-2.0.1-hd590300_0.conda#30fd6e37fe21f86f4bd26d6ee73eeec7
 https://conda.anaconda.org/conda-forge/linux-64/libogg-1.3.4-h7f98852_1.tar.bz2#6e8cc2173440d77708196c5b93771680
diff --git a/build_tools/azure/pylatest_conda_forge_mkl_osx-64_conda.lock b/build_tools/azure/pylatest_conda_forge_mkl_osx-64_conda.lock
index 71be8777a3508..10bb23b3c31ee 100644
--- a/build_tools/azure/pylatest_conda_forge_mkl_osx-64_conda.lock
+++ b/build_tools/azure/pylatest_conda_forge_mkl_osx-64_conda.lock
@@ -11,7 +11,7 @@ https://conda.anaconda.org/conda-forge/osx-64/libdeflate-1.19-ha4e1b8e_0.conda#6
 https://conda.anaconda.org/conda-forge/osx-64/libexpat-2.5.0-hf0c8a7f_1.conda#6c81cb022780ee33435cca0127dd43c9
 https://conda.anaconda.org/conda-forge/osx-64/libffi-3.4.2-h0d85af4_5.tar.bz2#ccb34fb14960ad8b125962d3d79b31a9
 https://conda.anaconda.org/conda-forge/noarch/libgfortran-devel_osx-64-12.3.0-h0b6f5ec_1.conda#ecc03a145b87ed6b8806fb02dc0e13c4
-https://conda.anaconda.org/conda-forge/osx-64/libiconv-1.17-hac89ed1_0.tar.bz2#691d103d11180486154af49c037b7ed9
+https://conda.anaconda.org/conda-forge/osx-64/libiconv-1.17-hd75f5a5_1.conda#c4069fa5c051d41093d3fd52caffa285
 https://conda.anaconda.org/conda-forge/osx-64/libjpeg-turbo-3.0.0-h0dc2134_1.conda#72507f8e3961bc968af17435060b6dd6
 https://conda.anaconda.org/conda-forge/osx-64/libwebp-base-1.3.2-h0dc2134_0.conda#4e7e9d244e87d66c18d36894fd6a8ae5
 https://conda.anaconda.org/conda-forge/osx-64/libzlib-1.2.13-h8a1eda9_5.conda#4a3ad23f6e16f99c04e166767193d700
diff --git a/build_tools/azure/py38_conda_defaults_openblas_environment.yml b/build_tools/azure/pymin_conda_defaults_openblas_environment.yml
similarity index 88%
rename from build_tools/azure/py38_conda_defaults_openblas_environment.yml
rename to build_tools/azure/pymin_conda_defaults_openblas_environment.yml
index f0e5c653cb2de..9f6a649249cbe 100644
--- a/build_tools/azure/py38_conda_defaults_openblas_environment.yml
+++ b/build_tools/azure/pymin_conda_defaults_openblas_environment.yml
@@ -4,10 +4,10 @@
 channels:
   - defaults
 dependencies:
-  - python=3.8
-  - numpy=1.17.3  # min
+  - python=3.9
+  - numpy=1.21
   - blas[build=openblas]
-  - scipy=1.5.0  # min
+  - scipy=1.7
   - cython=0.29.33  # min
   - joblib
   - threadpoolctl=2.2.0
diff --git a/build_tools/azure/py38_conda_defaults_openblas_linux-64_conda.lock b/build_tools/azure/pymin_conda_defaults_openblas_linux-64_conda.lock
similarity index 68%
rename from build_tools/azure/py38_conda_defaults_openblas_linux-64_conda.lock
rename to build_tools/azure/pymin_conda_defaults_openblas_linux-64_conda.lock
index f34e82e13f70c..32eeb4b9c9118 100644
--- a/build_tools/azure/py38_conda_defaults_openblas_linux-64_conda.lock
+++ b/build_tools/azure/pymin_conda_defaults_openblas_linux-64_conda.lock
@@ -1,25 +1,27 @@
 # Generated by conda-lock.
 # platform: linux-64
-# input_hash: 59b748d4b41a3e69462c0c657961aebaa5b15bc3caad670dff038296fa151c6e
+# input_hash: 9e735ba6c65ff977fbfdb3bade1b172aca761f7e774bf4b2814dc2efb8b9fa3b
 @EXPLICIT
 https://repo.anaconda.com/pkgs/main/linux-64/_libgcc_mutex-0.1-main.conda#c3473ff8bdb3d124ed5ff11ec380d6f9
 https://repo.anaconda.com/pkgs/main/linux-64/blas-1.0-openblas.conda#9ddfcaef10d79366c90128f5dc444be8
 https://repo.anaconda.com/pkgs/main/linux-64/ca-certificates-2023.08.22-h06a4308_0.conda#243d5065a09a3e85ab888c05f5b6445a
 https://repo.anaconda.com/pkgs/main/linux-64/ld_impl_linux-64-2.38-h1181459_1.conda#68eedfd9c06f2b0e6888d8db345b7f5b
-https://repo.anaconda.com/pkgs/main/linux-64/libgfortran4-7.5.0-ha8ba4b0_17.conda#e3883581cbf0a98672250c3e80d292bf
-https://repo.anaconda.com/pkgs/main/linux-64/libgfortran-ng-7.5.0-ha8ba4b0_17.conda#ecb35c8952579d5c8dc56c6e076ba948
+https://repo.anaconda.com/pkgs/main/linux-64/libgfortran5-11.2.0-h1234567_1.conda#36a01a8c30e0cadf0d3e842c50b73f3b
+https://repo.anaconda.com/pkgs/main/noarch/tzdata-2023c-h04d1e81_0.conda#29db02adf8808f7c64642cead3e28acd
+https://repo.anaconda.com/pkgs/main/linux-64/libgfortran-ng-11.2.0-h00389a5_1.conda#7429b67ab7b1d7cb99b9d1f3ddaec6e3
 https://repo.anaconda.com/pkgs/main/linux-64/libgomp-11.2.0-h1234567_1.conda#b372c0eea9b60732fdae4b817a63c8cd
 https://repo.anaconda.com/pkgs/main/linux-64/libstdcxx-ng-11.2.0-h1234567_1.conda#57623d10a70e09e1d048c2b2b6f4e2dd
 https://repo.anaconda.com/pkgs/main/linux-64/_openmp_mutex-5.1-1_gnu.conda#71d281e9c2192cb3fa425655a8defb85
 https://repo.anaconda.com/pkgs/main/linux-64/libgcc-ng-11.2.0-h1234567_1.conda#a87728dabf3151fb9cfa990bd2eb0464
 https://repo.anaconda.com/pkgs/main/linux-64/expat-2.5.0-h6a678d5_0.conda#9a21d99d49a0a556cf9590430dec8ec0
+https://repo.anaconda.com/pkgs/main/linux-64/fftw-3.3.9-h27cfd23_1.conda#d266674fbd3345d45a69896e1bdef8be
 https://repo.anaconda.com/pkgs/main/linux-64/giflib-5.2.1-h5eee18b_3.conda#aa7d64adb3cd8a75d398167f8c29afc3
 https://repo.anaconda.com/pkgs/main/linux-64/icu-73.1-h6a678d5_0.conda#6d09df641fc23f7d277a04dc7ea32dd4
 https://repo.anaconda.com/pkgs/main/linux-64/jpeg-9e-h5eee18b_1.conda#ac373800fda872108412d1ccfe3fa572
 https://repo.anaconda.com/pkgs/main/linux-64/lerc-3.0-h295c915_0.conda#b97309770412f10bed8d9448f6f98f87
 https://repo.anaconda.com/pkgs/main/linux-64/libdeflate-1.17-h5eee18b_1.conda#82831ef0b6c9595382d74e0c281f6742
 https://repo.anaconda.com/pkgs/main/linux-64/libffi-3.4.4-h6a678d5_0.conda#06e288f9250abef59b9a367d151fc339
-https://repo.anaconda.com/pkgs/main/linux-64/libopenblas-0.3.18-hf726d26_0.conda#10422bb3b9b022e27798fc368cda69ba
+https://repo.anaconda.com/pkgs/main/linux-64/libopenblas-0.3.21-h043d6bf_0.conda#7f7324dcc3c4761a14f3e4ac443235a7
 https://repo.anaconda.com/pkgs/main/linux-64/libuuid-1.41.5-h5eee18b_0.conda#4a6a2354414c9080327274aa514e5299
 https://repo.anaconda.com/pkgs/main/linux-64/libwebp-base-1.3.2-h5eee18b_0.conda#9179fc7baefa1e027f572edbc519d805
 https://repo.anaconda.com/pkgs/main/linux-64/libxcb-1.15-h7f8727e_0.conda#ada518dcadd6aaee9aae47ba9a671553
@@ -55,43 +57,45 @@ https://repo.anaconda.com/pkgs/main/linux-64/libclang-14.0.6-default_hc6dbbc7_1.
 https://repo.anaconda.com/pkgs/main/linux-64/libpq-12.15-hdbd6064_1.conda#218227d255f6056b6f49f52dd0d1731f
 https://repo.anaconda.com/pkgs/main/linux-64/libwebp-1.3.2-h11a3e52_0.conda#9e0d6c9abdd97b076c66d4cf488589ee
 https://repo.anaconda.com/pkgs/main/linux-64/openjpeg-2.4.0-h3ad879b_0.conda#86baecb47ecaa7f7ff2657a1f03b90c9
-https://repo.anaconda.com/pkgs/main/linux-64/python-3.8.18-h955ad1f_0.conda#fa35c1028f48db26df051ee75dd9422f
-https://repo.anaconda.com/pkgs/main/linux-64/certifi-2023.11.17-py38h06a4308_0.conda#3c4c381d8521859fcfde56ef2e3e5c40
+https://repo.anaconda.com/pkgs/main/linux-64/python-3.9.18-h955ad1f_0.conda#65fb745edecf85675ed0487fc54316b5
+https://repo.anaconda.com/pkgs/main/linux-64/certifi-2023.11.17-py39h06a4308_0.conda#0c9e433ce0339763a520ae5663ba352d
 https://repo.anaconda.com/pkgs/main/noarch/cycler-0.11.0-pyhd3eb1b0_0.conda#f5e365d2cdb66d547eb8c3ab93843aab
-https://repo.anaconda.com/pkgs/main/linux-64/cython-0.29.33-py38h6a678d5_0.conda#eb105388ba8bcf5ce82cf4cd5deeb5f9
-https://repo.anaconda.com/pkgs/main/linux-64/exceptiongroup-1.0.4-py38h06a4308_0.conda#db954e73dca6076c64a1004d71b45784
+https://repo.anaconda.com/pkgs/main/linux-64/cython-0.29.33-py39h6a678d5_0.conda#95eb1c0bbb563cf6238978ffc1c01d90
+https://repo.anaconda.com/pkgs/main/linux-64/exceptiongroup-1.0.4-py39h06a4308_0.conda#24efdd890b4d7e3e5b99784a87077709
 https://repo.anaconda.com/pkgs/main/noarch/execnet-1.9.0-pyhd3eb1b0_0.conda#f895937671af67cebb8af617494b3513
 https://repo.anaconda.com/pkgs/main/noarch/iniconfig-1.1.1-pyhd3eb1b0_0.tar.bz2#e40edff2c5708f342cef43c7f280c507
-https://repo.anaconda.com/pkgs/main/linux-64/joblib-1.2.0-py38h06a4308_0.conda#ee7f1f50ae15650057e5d5301900ae34
-https://repo.anaconda.com/pkgs/main/linux-64/kiwisolver-1.4.4-py38h6a678d5_0.conda#7424aa335d22974192800ec19a68486e
+https://repo.anaconda.com/pkgs/main/linux-64/joblib-1.2.0-py39h06a4308_0.conda#ac1f5687d70aa1128cbecb26bc9e559d
+https://repo.anaconda.com/pkgs/main/linux-64/kiwisolver-1.4.4-py39h6a678d5_0.conda#3d57aedbfbd054ce57fb3c1e4448828c
 https://repo.anaconda.com/pkgs/main/linux-64/mysql-5.7.24-h721c034_2.conda#dfc19ca2466d275c4c1f73b62c57f37b
-https://repo.anaconda.com/pkgs/main/linux-64/numpy-base-1.17.3-py38h2f8d375_0.conda#40edbb76ecacefb1e6ab639b514822b1
-https://repo.anaconda.com/pkgs/main/linux-64/packaging-23.1-py38h06a4308_0.conda#9ec9b6ee22dad7f49806c51218befd5b
-https://repo.anaconda.com/pkgs/main/linux-64/pillow-10.0.1-py38ha6cbd5a_0.conda#a27702df8dc6874ab9baeef7ffb565f3
-https://repo.anaconda.com/pkgs/main/linux-64/pluggy-1.0.0-py38h06a4308_1.conda#87bb1d3f6cf3e409a1dac38cee99918e
-https://repo.anaconda.com/pkgs/main/linux-64/ply-3.11-py38_0.conda#d6a69c576c6e4d19e3074eaae3d149f2
+https://repo.anaconda.com/pkgs/main/linux-64/numpy-base-1.21.5-py39h1e6e340_3.conda#8e39e800797e1f967d10a778c129a4f2
+https://repo.anaconda.com/pkgs/main/linux-64/packaging-23.1-py39h06a4308_0.conda#b8179f352917de28dd6bdbbb79e1db3f
+https://repo.anaconda.com/pkgs/main/linux-64/pillow-10.0.1-py39ha6cbd5a_0.conda#a16f050efc583049a46accd497525967
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 https://repo.anaconda.com/pkgs/main/noarch/py-1.11.0-pyhd3eb1b0_0.conda#7205a898ed2abbf6e9b903dff6abe08e
-https://repo.anaconda.com/pkgs/main/linux-64/pyparsing-3.0.9-py38h06a4308_0.conda#becbbf51d2b05de228eed968e20f963d
-https://repo.anaconda.com/pkgs/main/linux-64/pyqt5-sip-12.13.0-py38h5eee18b_0.conda#0ebb310c44968880835aefbf9fbbfa2c
-https://repo.anaconda.com/pkgs/main/linux-64/pytz-2023.3.post1-py38h06a4308_0.conda#351d59ddfed216ab9b05481d3bb63106
-https://repo.anaconda.com/pkgs/main/linux-64/setuptools-68.0.0-py38h06a4308_0.conda#24f9c895455f3992d6b04957fd0e7546
+https://repo.anaconda.com/pkgs/main/linux-64/pyparsing-3.0.9-py39h06a4308_0.conda#3a0537468e59760404f63b4f04369828
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+https://repo.anaconda.com/pkgs/main/linux-64/pytz-2023.3.post1-py39h06a4308_0.conda#0089cedc881d263480200b4e26377352
+https://repo.anaconda.com/pkgs/main/linux-64/setuptools-68.0.0-py39h06a4308_0.conda#0af0f107fd4cfe0b3b46ce9fe0471873
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-https://repo.anaconda.com/pkgs/main/linux-64/scipy-1.5.0-py38habc2bb6_0.conda#a27a97fc2377ab74cbd33ce22d3c3353
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+https://repo.anaconda.com/pkgs/main/linux-64/bottleneck-1.3.5-py39h7deecbd_0.conda#c07c855de7bcef6b409ef1460dea7438
+https://repo.anaconda.com/pkgs/main/linux-64/matplotlib-base-3.3.4-py39h62a2d02_0.conda#dbab28222c740af8e21a3e5e2882c178
+https://repo.anaconda.com/pkgs/main/linux-64/numexpr-2.8.7-py39h286c3b5_0.conda#de217418aa5b86ad59ecace62c11494e
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+https://repo.anaconda.com/pkgs/main/linux-64/pytest-cov-4.1.0-py39h06a4308_1.conda#8f41fce21670b120bf7fa8a7883380d9
+https://repo.anaconda.com/pkgs/main/linux-64/pytest-forked-1.6.0-py39h06a4308_0.conda#f0a6e858c06dc4d2ae5c9644630a6a83
+https://repo.anaconda.com/pkgs/main/linux-64/scipy-1.7.3-py39hf838250_2.conda#0667ea5ac14d35e26da19a0f068739da
+https://repo.anaconda.com/pkgs/main/linux-64/matplotlib-3.3.4-py39h06a4308_0.conda#384fc5e01ebfcf30e7161119d3029b5a
+https://repo.anaconda.com/pkgs/main/linux-64/pandas-1.5.3-py39h417a72b_0.conda#d4d4678ada21d96c49ee4583de1a7b3a
+https://repo.anaconda.com/pkgs/main/linux-64/pyamg-4.2.3-py39h79cecc1_0.conda#afc634da8b81dc504179d53d334e6e55
 https://repo.anaconda.com/pkgs/main/noarch/pytest-xdist-2.5.0-pyhd3eb1b0_0.conda#d15cdc4207bcf8ca920822597f1d138d
diff --git a/build_tools/azure/py38_conda_forge_mkl_environment.yml b/build_tools/azure/pymin_conda_forge_mkl_environment.yml
similarity index 96%
rename from build_tools/azure/py38_conda_forge_mkl_environment.yml
rename to build_tools/azure/pymin_conda_forge_mkl_environment.yml
index 2a2955d523a97..125c169ddc95f 100644
--- a/build_tools/azure/py38_conda_forge_mkl_environment.yml
+++ b/build_tools/azure/pymin_conda_forge_mkl_environment.yml
@@ -4,7 +4,7 @@
 channels:
   - conda-forge
 dependencies:
-  - python=3.8
+  - python=3.9
   - numpy
   - blas[build=mkl]
   - scipy
diff --git a/build_tools/azure/py38_conda_forge_mkl_win-64_conda.lock b/build_tools/azure/pymin_conda_forge_mkl_win-64_conda.lock
similarity index 79%
rename from build_tools/azure/py38_conda_forge_mkl_win-64_conda.lock
rename to build_tools/azure/pymin_conda_forge_mkl_win-64_conda.lock
index 8f8cbd0403eb0..6c8283ce0bb35 100644
--- a/build_tools/azure/py38_conda_forge_mkl_win-64_conda.lock
+++ b/build_tools/azure/pymin_conda_forge_mkl_win-64_conda.lock
@@ -1,12 +1,13 @@
 # Generated by conda-lock.
 # platform: win-64
-# input_hash: 4ac1abe3eccdd48c0d50af8de11dd3c144459b84f500eae8f575232e0be3a07d
+# input_hash: af544b6135127d0b6abf1eedcc8ba32a4d5e2e1d2904d4592abc7f3dba338569
 @EXPLICIT
 https://conda.anaconda.org/conda-forge/win-64/ca-certificates-2023.11.17-h56e8100_0.conda#1163114b483f26761f993c709e65271f
 https://conda.anaconda.org/conda-forge/win-64/intel-openmp-2023.2.0-h57928b3_50497.conda#a401f3cae152deb75bbed766a90a6312
 https://conda.anaconda.org/conda-forge/win-64/mkl-include-2023.2.0-h6a75c08_50497.conda#02fd1f15c56cc902aeaf3df3497cf266
 https://conda.anaconda.org/conda-forge/win-64/msys2-conda-epoch-20160418-1.tar.bz2#b0309b72560df66f71a9d5e34a5efdfa
-https://conda.anaconda.org/conda-forge/win-64/python_abi-3.8-4_cp38.conda#b1059de1664cef9a785dda079a50f1ed
+https://conda.anaconda.org/conda-forge/win-64/python_abi-3.9-4_cp39.conda#948b0d93d4ab1372d8fd45e1560afd47
+https://conda.anaconda.org/conda-forge/noarch/tzdata-2023c-h71feb2d_0.conda#939e3e74d8be4dac89ce83b20de2492a
 https://conda.anaconda.org/conda-forge/win-64/ucrt-10.0.22621.0-h57928b3_0.tar.bz2#72608f6cd3e5898229c3ea16deb1ac43
 https://conda.anaconda.org/conda-forge/win-64/m2w64-gmp-6.1.0-2.tar.bz2#53a1c73e1e3d185516d7e3af177596d9
 https://conda.anaconda.org/conda-forge/win-64/m2w64-libwinpthread-git-5.0.0.4634.697f757-2.tar.bz2#774130a326dee16f1ceb05cc687ee4f0
@@ -20,7 +21,7 @@ https://conda.anaconda.org/conda-forge/win-64/lerc-4.0.0-h63175ca_0.tar.bz2#1900
 https://conda.anaconda.org/conda-forge/win-64/libbrotlicommon-1.1.0-hcfcfb64_1.conda#f77f319fb82980166569e1280d5b2864
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 https://conda.anaconda.org/conda-forge/win-64/libffi-3.4.2-h8ffe710_5.tar.bz2#2c96d1b6915b408893f9472569dee135
-https://conda.anaconda.org/conda-forge/win-64/libiconv-1.17-h8ffe710_0.tar.bz2#050119977a86e4856f0416e2edcf81bb
+https://conda.anaconda.org/conda-forge/win-64/libiconv-1.17-hcfcfb64_1.conda#38d2d9078f2d6d3366fe7db635bf9de6
 https://conda.anaconda.org/conda-forge/win-64/libjpeg-turbo-3.0.0-hcfcfb64_1.conda#3f1b948619c45b1ca714d60c7389092c
 https://conda.anaconda.org/conda-forge/win-64/libogg-1.3.4-h8ffe710_1.tar.bz2#04286d905a0dcb7f7d4a12bdfe02516d
 https://conda.anaconda.org/conda-forge/win-64/libsqlite-3.44.2-hcfcfb64_0.conda#4a5f5ab56cbf3ccd08d71a1168061213
@@ -41,28 +42,24 @@ https://conda.anaconda.org/conda-forge/win-64/libvorbis-1.3.7-h0e60522_0.tar.bz2
 https://conda.anaconda.org/conda-forge/win-64/libxml2-2.11.6-hc3477c8_0.conda#08ffbb4c22dd3622e122058368f8b708
 https://conda.anaconda.org/conda-forge/win-64/m2w64-gcc-libs-5.3.0-7.tar.bz2#fe759119b8b3bfa720b8762c6fdc35de
 https://conda.anaconda.org/conda-forge/win-64/pcre2-10.42-h17e33f8_0.conda#59610c61da3af020289a806ec9c6a7fd
-https://conda.anaconda.org/conda-forge/win-64/python-3.8.18-h4de0772_0_cpython.conda#d261509b6d608edf6027143f205cf19b
+https://conda.anaconda.org/conda-forge/win-64/python-3.9.18-h4de0772_0_cpython.conda#ab83d6883a06de9c783c9aba765226c9
 https://conda.anaconda.org/conda-forge/win-64/zstd-1.5.5-h12be248_0.conda#792bb5da68bf0a6cac6a6072ecb8dbeb
 https://conda.anaconda.org/conda-forge/win-64/brotli-bin-1.1.0-hcfcfb64_1.conda#0105229d7c5fabaa840043a86c10ec64
-https://conda.anaconda.org/conda-forge/win-64/brotli-python-1.1.0-py38hd3f51b4_1.conda#72708ea626a2530148ea49eb743576f4
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-https://conda.anaconda.org/conda-forge/noarch/charset-normalizer-3.3.2-pyhd8ed1ab_0.conda#7f4a9e3fcff3f6356ae99244a014da6a
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-https://conda.anaconda.org/conda-forge/win-64/cython-3.0.6-py38hd3f51b4_0.conda#3b9e23471edf6af81b58f5d6f566c803
+https://conda.anaconda.org/conda-forge/win-64/cython-3.0.6-py39h99910a6_0.conda#eff4ff92d5839706ca82770ffdd12c36
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-https://conda.anaconda.org/conda-forge/noarch/idna-3.6-pyhd8ed1ab_0.conda#1a76f09108576397c41c0b0c5bd84134
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-https://conda.anaconda.org/conda-forge/win-64/kiwisolver-1.4.5-py38hb1fd069_1.conda#19a5ecd89c16b22db1d1830e93392aab
+https://conda.anaconda.org/conda-forge/win-64/kiwisolver-1.4.5-py39h1f6ef14_1.conda#4fc5bd0a7b535252028c647cc27d6c87
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 https://conda.anaconda.org/conda-forge/noarch/munkres-1.1.4-pyh9f0ad1d_0.tar.bz2#2ba8498c1018c1e9c61eb99b973dfe19
 https://conda.anaconda.org/conda-forge/noarch/packaging-23.2-pyhd8ed1ab_0.conda#79002079284aa895f883c6b7f3f88fd6
-https://conda.anaconda.org/conda-forge/noarch/platformdirs-4.1.0-pyhd8ed1ab_0.conda#45a5065664da0d1dfa8f8cd2eaf05ab9
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@@ -73,15 +70,14 @@ https://conda.anaconda.org/conda-forge/noarch/six-1.16.0-pyh6c4a22f_0.tar.bz2#e5
 https://conda.anaconda.org/conda-forge/noarch/threadpoolctl-3.2.0-pyha21a80b_0.conda#978d03388b62173b8e6f79162cf52b86
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-https://conda.anaconda.org/conda-forge/win-64/tornado-6.3.3-py38h91455d4_1.conda#1daea9d484de0ed524b80c9772484102
-https://conda.anaconda.org/conda-forge/win-64/unicodedata2-15.1.0-py38h91455d4_0.conda#556fb89abee3970c76556144bdab3263
+https://conda.anaconda.org/conda-forge/win-64/tornado-6.3.3-py39ha55989b_1.conda#f00d59c26ab0fc20b1923270397cbba5
+https://conda.anaconda.org/conda-forge/win-64/unicodedata2-15.1.0-py39ha55989b_0.conda#20ec896e8d97f2ff8be1124e624dc8f2
 https://conda.anaconda.org/conda-forge/noarch/wheel-0.42.0-pyhd8ed1ab_0.conda#1cdea58981c5cbc17b51973bcaddcea7
-https://conda.anaconda.org/conda-forge/noarch/win_inet_pton-1.1.0-pyhd8ed1ab_6.tar.bz2#30878ecc4bd36e8deeea1e3c151b2e0b
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 https://conda.anaconda.org/conda-forge/noarch/zipp-3.17.0-pyhd8ed1ab_0.conda#2e4d6bc0b14e10f895fc6791a7d9b26a
 https://conda.anaconda.org/conda-forge/win-64/brotli-1.1.0-hcfcfb64_1.conda#f47f6db2528e38321fb00ae31674c133
-https://conda.anaconda.org/conda-forge/win-64/coverage-7.3.2-py38h91455d4_0.conda#6d4fd016918358448d9055caa59cb616
+https://conda.anaconda.org/conda-forge/win-64/coverage-7.3.2-py39ha55989b_0.conda#c1fc093d65ac2cedefa2e1e8e45b891e
 https://conda.anaconda.org/conda-forge/win-64/glib-tools-2.78.3-h12be248_0.conda#03c45e65dbac2ba6c247dfd4896b664c
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 https://conda.anaconda.org/conda-forge/noarch/joblib-1.3.2-pyhd8ed1ab_0.conda#4da50d410f553db77e62ab62ffaa1abc
@@ -89,36 +85,32 @@ https://conda.anaconda.org/conda-forge/win-64/lcms2-2.16-h67d730c_0.conda#d35924
 https://conda.anaconda.org/conda-forge/win-64/libxcb-1.15-hcd874cb_0.conda#090d91b69396f14afef450c285f9758c
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 https://conda.anaconda.org/conda-forge/noarch/pip-23.3.1-pyhd8ed1ab_0.conda#2400c0b86889f43aa52067161e1fb108
-https://conda.anaconda.org/conda-forge/noarch/pysocks-1.7.1-pyh0701188_6.tar.bz2#56cd9fe388baac0e90c7149cfac95b60
 https://conda.anaconda.org/conda-forge/noarch/pytest-7.4.3-pyhd8ed1ab_0.conda#5bdca0aca30b0ee62bb84854e027eae0
 https://conda.anaconda.org/conda-forge/noarch/python-dateutil-2.8.2-pyhd8ed1ab_0.tar.bz2#dd999d1cc9f79e67dbb855c8924c7984
-https://conda.anaconda.org/conda-forge/win-64/sip-6.7.12-py38hd3f51b4_0.conda#8234c36685a08c47f11865ffc7ed36a9
+https://conda.anaconda.org/conda-forge/win-64/sip-6.7.12-py39h99910a6_0.conda#0cc5774390ada632ed7975203057c91c
 https://conda.anaconda.org/conda-forge/win-64/tbb-2021.11.0-h91493d7_0.conda#517c08eba817fb0e56cfd411ed198261
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+https://conda.anaconda.org/conda-forge/win-64/fonttools-4.46.0-py39ha55989b_0.conda#af11b744b5913ff4ea2c500c2990c4f2
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-https://conda.anaconda.org/conda-forge/win-64/numpy-1.24.4-py38h1d91fd2_0.conda#bb13551a7913ff4de74df687f03ba14e
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+https://conda.anaconda.org/conda-forge/win-64/contourpy-1.2.0-py39h1f6ef14_0.conda#9eeea323eacb6549cbb3df3d81181cb2
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+https://conda.anaconda.org/conda-forge/win-64/scipy-1.11.4-py39hddb5d58_0.conda#5bfa75180cc7592b7f89a9760e2a5726
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-https://conda.anaconda.org/conda-forge/win-64/matplotlib-base-3.7.3-py38h2724991_0.conda#80ee24705fa140b2febf66a1f9fb9b39
-https://conda.anaconda.org/conda-forge/win-64/matplotlib-3.7.3-py38haa244fe_0.conda#30c703c4b30df6b261308086e5171a9d
+https://conda.anaconda.org/conda-forge/win-64/matplotlib-base-3.8.2-py39hf19769e_0.conda#90a864bf689259d6a08a0c55037fd69c
+https://conda.anaconda.org/conda-forge/win-64/matplotlib-3.8.2-py39hcbf5309_0.conda#92625f78e662841feb70511ff466207c
diff --git a/build_tools/azure/py38_conda_forge_openblas_ubuntu_2204_environment.yml b/build_tools/azure/pymin_conda_forge_openblas_ubuntu_2204_environment.yml
similarity index 96%
rename from build_tools/azure/py38_conda_forge_openblas_ubuntu_2204_environment.yml
rename to build_tools/azure/pymin_conda_forge_openblas_ubuntu_2204_environment.yml
index 33e3dd2e449b7..de366a19e740d 100644
--- a/build_tools/azure/py38_conda_forge_openblas_ubuntu_2204_environment.yml
+++ b/build_tools/azure/pymin_conda_forge_openblas_ubuntu_2204_environment.yml
@@ -4,7 +4,7 @@
 channels:
   - conda-forge
 dependencies:
-  - python=3.8
+  - python=3.9
   - numpy
   - blas[build=openblas]
   - scipy
diff --git a/build_tools/azure/py38_conda_forge_openblas_ubuntu_2204_linux-64_conda.lock b/build_tools/azure/pymin_conda_forge_openblas_ubuntu_2204_linux-64_conda.lock
similarity index 88%
rename from build_tools/azure/py38_conda_forge_openblas_ubuntu_2204_linux-64_conda.lock
rename to build_tools/azure/pymin_conda_forge_openblas_ubuntu_2204_linux-64_conda.lock
index c43b92619e715..5f6400f107e5c 100644
--- a/build_tools/azure/py38_conda_forge_openblas_ubuntu_2204_linux-64_conda.lock
+++ b/build_tools/azure/pymin_conda_forge_openblas_ubuntu_2204_linux-64_conda.lock
@@ -1,6 +1,6 @@
 # Generated by conda-lock.
 # platform: linux-64
-# input_hash: d5c73010fc8d957036c4effb267c1f6b4ba48f0fc16bbf59b4b67dfe4aa39d54
+# input_hash: d70964a380150a9fdd34471eab9c13547ec7744156a6719ec0e4b97fc7d298fa
 @EXPLICIT
 https://conda.anaconda.org/conda-forge/linux-64/_libgcc_mutex-0.1-conda_forge.tar.bz2#d7c89558ba9fa0495403155b64376d81
 https://conda.anaconda.org/conda-forge/linux-64/ca-certificates-2023.11.17-hbcca054_0.conda#01ffc8d36f9eba0ce0b3c1955fa780ee
@@ -10,7 +10,8 @@ https://conda.anaconda.org/conda-forge/noarch/font-ttf-source-code-pro-2.038-h77
 https://conda.anaconda.org/conda-forge/noarch/font-ttf-ubuntu-0.83-h77eed37_1.conda#6185f640c43843e5ad6fd1c5372c3f80
 https://conda.anaconda.org/conda-forge/linux-64/ld_impl_linux-64-2.40-h41732ed_0.conda#7aca3059a1729aa76c597603f10b0dd3
 https://conda.anaconda.org/conda-forge/linux-64/libstdcxx-ng-13.2.0-h7e041cc_3.conda#937eaed008f6bf2191c5fe76f87755e9
-https://conda.anaconda.org/conda-forge/linux-64/python_abi-3.8-4_cp38.conda#ea6b353536f42246cd130c7fef1285cf
+https://conda.anaconda.org/conda-forge/linux-64/python_abi-3.9-4_cp39.conda#bfe4b3259a8ac6cdf0037752904da6a7
+https://conda.anaconda.org/conda-forge/noarch/tzdata-2023c-h71feb2d_0.conda#939e3e74d8be4dac89ce83b20de2492a
 https://conda.anaconda.org/conda-forge/noarch/fonts-conda-forge-1-0.tar.bz2#f766549260d6815b0c52253f1fb1bb29
 https://conda.anaconda.org/conda-forge/noarch/fonts-conda-ecosystem-1-0.tar.bz2#fee5683a3f04bd15cbd8318b096a27ab
 https://conda.anaconda.org/conda-forge/linux-64/_openmp_mutex-4.5-2_kmp_llvm.tar.bz2#562b26ba2e19059551a811e72ab7f793
@@ -29,7 +30,7 @@ https://conda.anaconda.org/conda-forge/linux-64/libdeflate-1.19-hd590300_0.conda
 https://conda.anaconda.org/conda-forge/linux-64/libexpat-2.5.0-hcb278e6_1.conda#6305a3dd2752c76335295da4e581f2fd
 https://conda.anaconda.org/conda-forge/linux-64/libffi-3.4.2-h7f98852_5.tar.bz2#d645c6d2ac96843a2bfaccd2d62b3ac3
 https://conda.anaconda.org/conda-forge/linux-64/libgfortran5-13.2.0-ha4646dd_3.conda#c714d905cdfa0e70200f68b80cc04764
-https://conda.anaconda.org/conda-forge/linux-64/libiconv-1.17-h166bdaf_0.tar.bz2#b62b52da46c39ee2bc3c162ac7f1804d
+https://conda.anaconda.org/conda-forge/linux-64/libiconv-1.17-hd590300_1.conda#4b06b43d0eca61db2899e4d7a289c302
 https://conda.anaconda.org/conda-forge/linux-64/libjpeg-turbo-3.0.0-hd590300_1.conda#ea25936bb4080d843790b586850f82b8
 https://conda.anaconda.org/conda-forge/linux-64/libnsl-2.0.1-hd590300_0.conda#30fd6e37fe21f86f4bd26d6ee73eeec7
 https://conda.anaconda.org/conda-forge/linux-64/libogg-1.3.4-h7f98852_1.tar.bz2#6e8cc2173440d77708196c5b93771680
@@ -87,7 +88,7 @@ https://conda.anaconda.org/conda-forge/linux-64/libtiff-4.6.0-ha9c0a0a_2.conda#5
 https://conda.anaconda.org/conda-forge/linux-64/llvm-openmp-17.0.6-h4dfa4b3_0.conda#c1665f9c1c9f6c93d8b4e492a6a39056
 https://conda.anaconda.org/conda-forge/linux-64/mysql-libs-8.0.33-hca2cd23_6.conda#e87530d1b12dd7f4e0f856dc07358d60
 https://conda.anaconda.org/conda-forge/linux-64/nss-3.95-h1d7d5a4_0.conda#d3a8067adcc45a923f4b1987c91d69da
-https://conda.anaconda.org/conda-forge/linux-64/python-3.8.18-hd12c33a_0_cpython.conda#334cb629e10d209f1c17630f653168b1
+https://conda.anaconda.org/conda-forge/linux-64/python-3.9.18-h0755675_0_cpython.conda#3ede353bc605068d9677e700b1847382
 https://conda.anaconda.org/conda-forge/linux-64/xcb-util-0.4.0-hd590300_1.conda#9bfac7ccd94d54fd21a0501296d60424
 https://conda.anaconda.org/conda-forge/linux-64/xcb-util-keysyms-0.4.0-h8ee46fc_1.conda#632413adcd8bc16b515cab87a2932913
 https://conda.anaconda.org/conda-forge/linux-64/xcb-util-renderutil-0.3.9-hd590300_1.conda#e995b155d938b6779da6ace6c6b13816
@@ -95,15 +96,15 @@ https://conda.anaconda.org/conda-forge/linux-64/xcb-util-wm-0.4.1-h8ee46fc_1.con
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-https://conda.anaconda.org/conda-forge/linux-64/brotli-python-1.1.0-py38h17151c0_1.conda#7a5a699c8992fc51ef25e980f4502c2a
+https://conda.anaconda.org/conda-forge/linux-64/brotli-python-1.1.0-py39h3d6467e_1.conda#c48418c8b35f1d59ae9ae1174812b40a
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-https://conda.anaconda.org/conda-forge/linux-64/cython-3.0.6-py38h17151c0_0.conda#c1cfbb88363887423f24c14c8897a1a9
+https://conda.anaconda.org/conda-forge/linux-64/cython-3.0.6-py39h3d6467e_0.conda#bfde3cf098e298b81d1c1cbc9c79ab59
 https://conda.anaconda.org/conda-forge/linux-64/dbus-1.13.6-h5008d03_3.tar.bz2#ecfff944ba3960ecb334b9a2663d708d
-https://conda.anaconda.org/conda-forge/linux-64/docutils-0.20.1-py38h578d9bd_3.conda#066cef5c54a7f43858f883cbae026e00
+https://conda.anaconda.org/conda-forge/linux-64/docutils-0.20.1-py39hf3d152e_3.conda#09a48956e1c155907fd0d626f3e80f2e
 https://conda.anaconda.org/conda-forge/noarch/exceptiongroup-1.2.0-pyhd8ed1ab_0.conda#f6c211fee3c98229652b60a9a42ef363
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@@ -111,19 +112,18 @@ https://conda.anaconda.org/conda-forge/linux-64/glib-tools-2.78.3-hfc55251_0.con
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 https://conda.anaconda.org/conda-forge/noarch/iniconfig-2.0.0-pyhd8ed1ab_0.conda#f800d2da156d08e289b14e87e43c1ae5
-https://conda.anaconda.org/conda-forge/linux-64/kiwisolver-1.4.5-py38h7f3f72f_1.conda#b66dcd4f710628fc5563ad56f02ca89b
+https://conda.anaconda.org/conda-forge/linux-64/kiwisolver-1.4.5-py39h7633fee_1.conda#c9f74d717e5a2847a9f8b779c54130f2
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 https://conda.anaconda.org/conda-forge/linux-64/libsystemd0-255-h3516f8a_0.conda#24e2649ebd432e652aa72cfd05f23a8e
-https://conda.anaconda.org/conda-forge/linux-64/markupsafe-2.1.3-py38h01eb140_1.conda#2dabf287937cd631e292096cc6d0867e
+https://conda.anaconda.org/conda-forge/linux-64/markupsafe-2.1.3-py39hd1e30aa_1.conda#ee2b4665b852ec6ff2758f3c1b91233d
 https://conda.anaconda.org/conda-forge/noarch/munkres-1.1.4-pyh9f0ad1d_0.tar.bz2#2ba8498c1018c1e9c61eb99b973dfe19
 https://conda.anaconda.org/conda-forge/linux-64/openblas-0.3.25-pthreads_h7a3da1a_0.conda#87661673941b5e702275fdf0fc095ad0
 https://conda.anaconda.org/conda-forge/linux-64/openjpeg-2.5.0-h488ebb8_3.conda#128c25b7fe6a25286a48f3a6a9b5b6f3
 https://conda.anaconda.org/conda-forge/noarch/packaging-23.2-pyhd8ed1ab_0.conda#79002079284aa895f883c6b7f3f88fd6
-https://conda.anaconda.org/conda-forge/noarch/platformdirs-4.1.0-pyhd8ed1ab_0.conda#45a5065664da0d1dfa8f8cd2eaf05ab9
 https://conda.anaconda.org/conda-forge/noarch/pluggy-1.3.0-pyhd8ed1ab_0.conda#2390bd10bed1f3fdc7a537fb5a447d8d
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@@ -135,18 +135,13 @@ https://conda.anaconda.org/conda-forge/noarch/pytz-2023.3.post1-pyhd8ed1ab_0.con
 https://conda.anaconda.org/conda-forge/noarch/setuptools-68.2.2-pyhd8ed1ab_0.conda#fc2166155db840c634a1291a5c35a709
 https://conda.anaconda.org/conda-forge/noarch/six-1.16.0-pyh6c4a22f_0.tar.bz2#e5f25f8dbc060e9a8d912e432202afc2
 https://conda.anaconda.org/conda-forge/noarch/snowballstemmer-2.2.0-pyhd8ed1ab_0.tar.bz2#4d22a9315e78c6827f806065957d566e
-https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-applehelp-1.0.4-pyhd8ed1ab_0.conda#5a31a7d564f551d0e6dff52fd8cb5b16
-https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-devhelp-1.0.2-py_0.tar.bz2#68e01cac9d38d0e717cd5c87bc3d2cc9
-https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-htmlhelp-2.0.1-pyhd8ed1ab_0.conda#6c8c4d6eb2325e59290ac6dbbeacd5f0
 https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-jsmath-1.0.1-pyhd8ed1ab_0.conda#da1d979339e2714c30a8e806a33ec087
-https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-qthelp-1.0.3-py_0.tar.bz2#d01180388e6d1838c3e1ad029590aa7a
-https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-serializinghtml-1.1.5-pyhd8ed1ab_2.tar.bz2#9ff55a0901cf952f05c654394de76bf7
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 https://conda.anaconda.org/conda-forge/noarch/tomli-2.0.1-pyhd8ed1ab_0.tar.bz2#5844808ffab9ebdb694585b50ba02a96
-https://conda.anaconda.org/conda-forge/linux-64/tornado-6.3.3-py38h01eb140_1.conda#660cfc2fc5bd9e3b458ad394976652cf
-https://conda.anaconda.org/conda-forge/linux-64/unicodedata2-15.1.0-py38h01eb140_0.conda#d28c162f670f8dc3a89e246573ae96c9
+https://conda.anaconda.org/conda-forge/linux-64/tornado-6.3.3-py39hd1e30aa_1.conda#cbe186eefb0bcd91e8f47c3908489874
+https://conda.anaconda.org/conda-forge/linux-64/unicodedata2-15.1.0-py39hd1e30aa_0.conda#1da984bbb6e765743e13388ba7b7b2c8
 https://conda.anaconda.org/conda-forge/linux-64/xcb-util-image-0.4.0-h8ee46fc_1.conda#9d7bcddf49cbf727730af10e71022c73
 https://conda.anaconda.org/conda-forge/linux-64/xkeyboard-config-2.40-hd590300_0.conda#07c15d846a2e4d673da22cbd85fdb6d2
 https://conda.anaconda.org/conda-forge/linux-64/xorg-libxext-1.3.4-h0b41bf4_2.conda#82b6df12252e6f32402b96dacc656fec
@@ -154,7 +149,7 @@ https://conda.anaconda.org/conda-forge/linux-64/xorg-libxrender-0.9.11-hd590300_
 https://conda.anaconda.org/conda-forge/noarch/zipp-3.17.0-pyhd8ed1ab_0.conda#2e4d6bc0b14e10f895fc6791a7d9b26a
 https://conda.anaconda.org/conda-forge/noarch/babel-2.13.1-pyhd8ed1ab_0.conda#3ccff479c246692468f604df9c85ef26
 https://conda.anaconda.org/conda-forge/linux-64/cairo-1.18.0-h3faef2a_0.conda#f907bb958910dc404647326ca80c263e
-https://conda.anaconda.org/conda-forge/linux-64/fonttools-4.46.0-py38h01eb140_0.conda#8fc0131364ec46d8d68edf96a7b58497
+https://conda.anaconda.org/conda-forge/linux-64/fonttools-4.46.0-py39hd1e30aa_0.conda#9b58e5973dd3d786253f4ca9534b1aba
 https://conda.anaconda.org/conda-forge/linux-64/glib-2.78.3-hfc55251_0.conda#e08e51acc7d1ae8dbe13255e7b4c64ac
 https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-7.0.0-pyha770c72_0.conda#a941237cd06538837b25cd245fcd25d8
 https://conda.anaconda.org/conda-forge/noarch/importlib_resources-6.1.1-pyhd8ed1ab_0.conda#3d5fa25cf42f3f32a12b2d874ace8574
@@ -164,32 +159,36 @@ https://conda.anaconda.org/conda-forge/linux-64/libcblas-3.9.0-20_linux64_openbl
 https://conda.anaconda.org/conda-forge/linux-64/libclang-15.0.7-default_hb11cfb5_4.conda#c90f4cbb57839c98fef8f830e4b9972f
 https://conda.anaconda.org/conda-forge/linux-64/liblapack-3.9.0-20_linux64_openblas.conda#6fabc51f5e647d09cc010c40061557e0
 https://conda.anaconda.org/conda-forge/linux-64/libxkbcommon-1.6.0-h5d7e998_0.conda#d8edd0e29db6fb6b6988e1a28d35d994
-https://conda.anaconda.org/conda-forge/linux-64/pillow-10.1.0-py38ha43c96d_0.conda#67ca17c651f86159a3b8ed1132d97c12
+https://conda.anaconda.org/conda-forge/linux-64/pillow-10.1.0-py39had0adad_0.conda#eeaa413fddccecb2ab7f747bdb55b07f
 https://conda.anaconda.org/conda-forge/linux-64/pulseaudio-client-16.1-hb77b528_5.conda#ac902ff3c1c6d750dd0dfc93a974ab74
 https://conda.anaconda.org/conda-forge/noarch/pytest-7.4.3-pyhd8ed1ab_0.conda#5bdca0aca30b0ee62bb84854e027eae0
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-https://conda.anaconda.org/conda-forge/linux-64/sip-6.7.12-py38h17151c0_0.conda#ae2edf79b63f97071aea203b22a6774a
+https://conda.anaconda.org/conda-forge/linux-64/sip-6.7.12-py39h3d6467e_0.conda#e667a3ab0df62c54e60e1843d2e6defb
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 https://conda.anaconda.org/conda-forge/noarch/importlib-resources-6.1.1-pyhd8ed1ab_0.conda#d04bd1b5bed9177dd7c3cef15e2b6710
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-https://conda.anaconda.org/conda-forge/linux-64/numpy-1.24.4-py38h59b608b_0.conda#8c3e050afeeb2b32575bdb8955cc67b2
-https://conda.anaconda.org/conda-forge/linux-64/pyqt5-sip-12.12.2-py38h17151c0_5.conda#3d66f5c4a0af2713f60ec11bf1230136
+https://conda.anaconda.org/conda-forge/linux-64/numpy-1.26.2-py39h474f0d3_0.conda#459a58eda3e74dd5e3d596c618e7f20a
+https://conda.anaconda.org/conda-forge/linux-64/pyqt5-sip-12.12.2-py39h3d6467e_5.conda#93aff412f3e49fdb43361c0215cbd72d
 https://conda.anaconda.org/conda-forge/noarch/pytest-forked-1.6.0-pyhd8ed1ab_0.conda#a46947638b6e005b63d2d6271da529b0
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-https://conda.anaconda.org/conda-forge/linux-64/contourpy-1.1.1-py38h7f3f72f_1.conda#18ae206b2d413e5cc8d2bb8ab48aa165
+https://conda.anaconda.org/conda-forge/linux-64/contourpy-1.2.0-py39h7633fee_0.conda#ed71ad3e30eb03da363fb797419cce98
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-https://conda.anaconda.org/conda-forge/linux-64/pandas-2.0.3-py38h01efb38_1.conda#01a2b6144e65631e2fe24e569d0738ee
-https://conda.anaconda.org/conda-forge/noarch/pooch-1.8.0-pyhd8ed1ab_0.conda#134b2b57b7865d2316a7cce1915a51ed
+https://conda.anaconda.org/conda-forge/linux-64/pandas-2.1.4-py39hddac248_0.conda#dcfd2f15c6f8f0bbf234412b18a2a5d0
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-https://conda.anaconda.org/conda-forge/noarch/sphinx-7.1.2-pyhd8ed1ab_0.conda#d02bfa35cd4f2cd624289f64911cae9d
+https://conda.anaconda.org/conda-forge/linux-64/scipy-1.11.4-py39h474f0d3_0.conda#4b401c1516417b4b14aa1249d2f7929d
 https://conda.anaconda.org/conda-forge/linux-64/blas-2.120-openblas.conda#c8f6916a81a340650078171b1d852574
-https://conda.anaconda.org/conda-forge/linux-64/matplotlib-base-3.7.3-py38h58ed7fa_0.conda#d8db25d58823182ce93233964f307a47
-https://conda.anaconda.org/conda-forge/noarch/numpydoc-1.6.0-pyhd8ed1ab_0.conda#191b8a622191a403700d16a2008e4e29
+https://conda.anaconda.org/conda-forge/linux-64/matplotlib-base-3.8.2-py39he9076e7_0.conda#6085411aa2f0b2b801d3b46e1d3b83c5
+https://conda.anaconda.org/conda-forge/linux-64/pyamg-5.0.1-py39hda80f44_1.conda#6df47699edb4d8d3365de2d189a456bc
 https://conda.anaconda.org/conda-forge/linux-64/qt-main-5.15.8-h82b777d_17.conda#4f01e33dbb406085a16a2813ab067e95
-https://conda.anaconda.org/conda-forge/linux-64/scipy-1.10.1-py38h59b608b_3.conda#2f2a57462fcfbc67dfdbb0de6f7484c2
-https://conda.anaconda.org/conda-forge/linux-64/pyamg-5.0.1-py38hae673b5_1.conda#5987693134a52fb49df3f8ce808af1a6
-https://conda.anaconda.org/conda-forge/linux-64/pyqt-5.15.9-py38hffdaa6c_5.conda#398e774c9eaa5ed4dddf7a7681f6cfb8
-https://conda.anaconda.org/conda-forge/linux-64/matplotlib-3.7.3-py38h578d9bd_0.conda#97a5ed8cd42b4276036646869bc94570
+https://conda.anaconda.org/conda-forge/linux-64/pyqt-5.15.9-py39h52134e7_5.conda#e1f148e57d071b09187719df86f513c1
+https://conda.anaconda.org/conda-forge/linux-64/matplotlib-3.8.2-py39hf3d152e_0.conda#18d40a5ada9a801cabaf5d47c15c6282
+https://conda.anaconda.org/conda-forge/noarch/numpydoc-1.6.0-pyhd8ed1ab_0.conda#191b8a622191a403700d16a2008e4e29
+https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-applehelp-1.0.7-pyhd8ed1ab_0.conda#aebfabcb60c33a89c1f9290cab49bc93
+https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-devhelp-1.0.5-pyhd8ed1ab_0.conda#ebf08f5184d8eaa486697bc060031953
+https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-htmlhelp-2.0.4-pyhd8ed1ab_0.conda#a9a89000dfd19656ad004b937eeb6828
+https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-qthelp-1.0.6-pyhd8ed1ab_0.conda#cf5c9649272c677a964a7313279e3a9b
+https://conda.anaconda.org/conda-forge/noarch/sphinx-7.2.6-pyhd8ed1ab_0.conda#bbfd1120d1824d2d073bc65935f0e4c0
+https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-serializinghtml-1.1.9-pyhd8ed1ab_0.conda#0612e497d7860728f2cda421ea2aec09
diff --git a/build_tools/azure/test_script.sh b/build_tools/azure/test_script.sh
index 5117473ea6366..a45fa3dd49842 100755
--- a/build_tools/azure/test_script.sh
+++ b/build_tools/azure/test_script.sh
@@ -83,5 +83,5 @@ if [[ -n "$SELECTED_TESTS" ]]; then
 fi
 
 set -x
-eval "$TEST_CMD --pyargs sklearn"
+eval "$TEST_CMD --maxfail=10 --pyargs sklearn"
 set +x
diff --git a/build_tools/circle/doc_linux-64_conda.lock b/build_tools/circle/doc_linux-64_conda.lock
index 03963f45380e3..22c18555c6a9d 100644
--- a/build_tools/circle/doc_linux-64_conda.lock
+++ b/build_tools/circle/doc_linux-64_conda.lock
@@ -44,7 +44,7 @@ https://conda.anaconda.org/conda-forge/linux-64/libdeflate-1.19-hd590300_0.conda
 https://conda.anaconda.org/conda-forge/linux-64/libexpat-2.5.0-hcb278e6_1.conda#6305a3dd2752c76335295da4e581f2fd
 https://conda.anaconda.org/conda-forge/linux-64/libffi-3.4.2-h7f98852_5.tar.bz2#d645c6d2ac96843a2bfaccd2d62b3ac3
 https://conda.anaconda.org/conda-forge/linux-64/libgfortran5-13.2.0-ha4646dd_3.conda#c714d905cdfa0e70200f68b80cc04764
-https://conda.anaconda.org/conda-forge/linux-64/libiconv-1.17-h166bdaf_0.tar.bz2#b62b52da46c39ee2bc3c162ac7f1804d
+https://conda.anaconda.org/conda-forge/linux-64/libiconv-1.17-hd590300_1.conda#4b06b43d0eca61db2899e4d7a289c302
 https://conda.anaconda.org/conda-forge/linux-64/libjpeg-turbo-3.0.0-hd590300_1.conda#ea25936bb4080d843790b586850f82b8
 https://conda.anaconda.org/conda-forge/linux-64/libnsl-2.0.1-hd590300_0.conda#30fd6e37fe21f86f4bd26d6ee73eeec7
 https://conda.anaconda.org/conda-forge/linux-64/libogg-1.3.4-h7f98852_1.tar.bz2#6e8cc2173440d77708196c5b93771680
@@ -293,7 +293,7 @@ https://conda.anaconda.org/conda-forge/noarch/sphinxext-opengraph-0.9.0-pyhd8ed1
 # pip argon2-cffi-bindings @ https://files.pythonhosted.org/packages/ec/f7/378254e6dd7ae6f31fe40c8649eea7d4832a42243acaf0f1fff9083b2bed/argon2_cffi_bindings-21.2.0-cp36-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl#sha256=b746dba803a79238e925d9046a63aa26bf86ab2a2fe74ce6b009a1c3f5c8f2ae
 # pip isoduration @ https://files.pythonhosted.org/packages/7b/55/e5326141505c5d5e34c5e0935d2908a74e4561eca44108fbfb9c13d2911a/isoduration-20.11.0-py3-none-any.whl#sha256=b2904c2a4228c3d44f409c8ae8e2370eb21a26f7ac2ec5446df141dde3452042
 # pip jsonschema-specifications @ https://files.pythonhosted.org/packages/d7/48/b62ccba8f4ac91817d6a11b340e63806175dafb10234a8cf7140bd389da5/jsonschema_specifications-2023.11.2-py3-none-any.whl#sha256=e74ba7c0a65e8cb49dc26837d6cfe576557084a8b423ed16a420984228104f93
-# pip jupyter-server-terminals @ https://files.pythonhosted.org/packages/ea/7f/36db12bdb90f5237766dcbf59892198daab7260acbcf03fc75e2a2a82672/jupyter_server_terminals-0.4.4-py3-none-any.whl#sha256=75779164661cec02a8758a5311e18bb8eb70c4e86c6b699403100f1585a12a36
+# pip jupyter-server-terminals @ https://files.pythonhosted.org/packages/63/9a/98d252b7977ac3aa0aa4152b87b356e2048d4b193f38840c0e00dd85fadc/jupyter_server_terminals-0.5.0-py3-none-any.whl#sha256=2fc0692c883bfd891f4fba0c4b4a684a37234b0ba472f2e97ed0a3888f46e1e4
 # pip jupyterlite-core @ https://files.pythonhosted.org/packages/2f/0b/58eb568cbce3bbaa8702c6ce297870402828b222598a1db10e23e7190f52/jupyterlite_core-0.2.1-py3-none-any.whl#sha256=3f6161c4ad609bca913a42598005ff577611daae8dce448292fbb2c15db6b393
 # pip pyzmq @ https://files.pythonhosted.org/packages/76/8b/6fca99e22c6316917de32b17be299dea431544209d619da16b6d9ec85c83/pyzmq-25.1.2-cp39-cp39-manylinux_2_12_x86_64.manylinux2010_x86_64.whl#sha256=c0b5ca88a8928147b7b1e2dfa09f3b6c256bc1135a1338536cbc9ea13d3b7add
 # pip argon2-cffi @ https://files.pythonhosted.org/packages/a4/6a/e8a041599e78b6b3752da48000b14c8d1e8a04ded09c88c714ba047f34f5/argon2_cffi-23.1.0-py3-none-any.whl#sha256=c670642b78ba29641818ab2e68bd4e6a78ba53b7eff7b4c3815ae16abf91c7ea
diff --git a/build_tools/circle/doc_min_dependencies_environment.yml b/build_tools/circle/doc_min_dependencies_environment.yml
index 26cda35f6588e..18c52146da5ff 100644
--- a/build_tools/circle/doc_min_dependencies_environment.yml
+++ b/build_tools/circle/doc_min_dependencies_environment.yml
@@ -4,21 +4,21 @@
 channels:
   - conda-forge
 dependencies:
-  - python=3.8
-  - numpy=1.17.3  # min
+  - python=3.9
+  - numpy=1.19.5  # min
   - blas
-  - scipy=1.5.0  # min
+  - scipy=1.6.0  # min
   - cython=0.29.33  # min
   - joblib
   - threadpoolctl
   - matplotlib=3.3.4  # min
-  - pandas=1.0.5  # min
+  - pandas=1.1.5  # min
   - pyamg
   - pytest
   - pytest-xdist=2.5.0
   - pillow
   - setuptools
-  - scikit-image=0.16.2  # min
+  - scikit-image=0.17.2  # min
   - seaborn
   - memory_profiler
   - compilers
diff --git a/build_tools/circle/doc_min_dependencies_linux-64_conda.lock b/build_tools/circle/doc_min_dependencies_linux-64_conda.lock
index 7c1a828fb3a33..77a72a3596b05 100644
--- a/build_tools/circle/doc_min_dependencies_linux-64_conda.lock
+++ b/build_tools/circle/doc_min_dependencies_linux-64_conda.lock
@@ -1,6 +1,6 @@
 # Generated by conda-lock.
 # platform: linux-64
-# input_hash: aa071bb1fa7968b6df9fd3662b49affc88d4f0648d359f76a96ef677162b92b3
+# input_hash: 35f943b65f19232746bf1ac103664d9fa08c9fce0bcc39d7ee2ecf873d996bff
 @EXPLICIT
 https://conda.anaconda.org/conda-forge/linux-64/_libgcc_mutex-0.1-conda_forge.tar.bz2#d7c89558ba9fa0495403155b64376d81
 https://conda.anaconda.org/conda-forge/linux-64/ca-certificates-2023.11.17-hbcca054_0.conda#01ffc8d36f9eba0ce0b3c1955fa780ee
@@ -9,26 +9,24 @@ https://conda.anaconda.org/conda-forge/noarch/font-ttf-inconsolata-3.000-h77eed3
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-https://conda.anaconda.org/conda-forge/linux-64/libgcc-devel_linux-64-7.5.0-hda03d7c_20.tar.bz2#2146b25eb2a762a44fab709338a7b6d9
-https://conda.anaconda.org/conda-forge/linux-64/libgfortran4-7.5.0-h14aa051_20.tar.bz2#a072eab836c3a9578ce72b5640ce592d
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+https://conda.anaconda.org/conda-forge/linux-64/ld_impl_linux-64-2.40-h41732ed_0.conda#7aca3059a1729aa76c597603f10b0dd3
+https://conda.anaconda.org/conda-forge/noarch/libgcc-devel_linux-64-12.3.0-h8bca6fd_103.conda#1d7f6d1825bd6bf21ee04336ec87a777
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@@ -38,11 +36,13 @@ https://conda.anaconda.org/conda-forge/linux-64/lerc-4.0.0-h27087fc_0.tar.bz2#76
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-https://conda.anaconda.org/conda-forge/linux-64/libiconv-1.17-h166bdaf_0.tar.bz2#b62b52da46c39ee2bc3c162ac7f1804d
+https://conda.anaconda.org/conda-forge/linux-64/libgfortran5-13.2.0-ha4646dd_3.conda#c714d905cdfa0e70200f68b80cc04764
+https://conda.anaconda.org/conda-forge/linux-64/libiconv-1.17-hd590300_1.conda#4b06b43d0eca61db2899e4d7a289c302
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 https://conda.anaconda.org/conda-forge/linux-64/libopus-1.3.1-h7f98852_1.tar.bz2#15345e56d527b330e1cacbdf58676e8f
+https://conda.anaconda.org/conda-forge/linux-64/libsanitizer-12.3.0-h0f45ef3_3.conda#eda05ab0db8f8490945fd99244183e3a
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@@ -64,13 +64,12 @@ https://conda.anaconda.org/conda-forge/linux-64/xorg-xproto-7.0.31-h7f98852_1007
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-https://conda.anaconda.org/conda-forge/linux-64/gcc_linux-64-7.5.0-h47867f9_33.tar.bz2#3a31c3f430a31184a5d07e67d3b24e2c
-https://conda.anaconda.org/conda-forge/linux-64/gfortran_impl_linux-64-7.5.0-h56cb351_20.tar.bz2#8f897b30195bd3a2251b4c51c3cc91cf
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+https://conda.anaconda.org/conda-forge/linux-64/gcc_impl_linux-64-12.3.0-he2b93b0_3.conda#71c68ea75afe6ac7a9c62c08f5d67a5a
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+https://conda.anaconda.org/conda-forge/linux-64/libgfortran-ng-13.2.0-h69a702a_3.conda#73031c79546ad06f1fe62e57fdd021bc
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-https://conda.anaconda.org/conda-forge/linux-64/pyqt-5.15.9-py38hffdaa6c_5.conda#398e774c9eaa5ed4dddf7a7681f6cfb8
-https://conda.anaconda.org/conda-forge/linux-64/scikit-image-0.16.2-py38hb3f55d8_0.tar.bz2#468b398fefac8884cd6e6513af66549b
 https://conda.anaconda.org/conda-forge/noarch/seaborn-base-0.12.2-pyhd8ed1ab_0.conda#cf88f3a1c11536bc3c10c14ad00ccc42
-https://conda.anaconda.org/conda-forge/noarch/sphinx-gallery-0.15.0-pyhd8ed1ab_0.conda#1a49ca9515ef9a96edff2eea06143dc6
-https://conda.anaconda.org/conda-forge/linux-64/statsmodels-0.12.2-py38h5c078b8_0.tar.bz2#33787719ad03d33cffc4e2e3ea82bc9e
-https://conda.anaconda.org/conda-forge/linux-64/matplotlib-3.3.4-py38h578d9bd_0.tar.bz2#2ad11624aec829f58f86a231bbdf3990
+https://conda.anaconda.org/conda-forge/linux-64/statsmodels-0.13.2-py39hd257fcd_0.tar.bz2#bd7cdadf70e34a19333c3aacc40206e8
+https://conda.anaconda.org/conda-forge/noarch/tifffile-2020.6.3-py_0.tar.bz2#1fb771bb25b2eecbc73abf5143fa35bd
+https://conda.anaconda.org/conda-forge/linux-64/pyqt-5.15.9-py39h52134e7_5.conda#e1f148e57d071b09187719df86f513c1
+https://conda.anaconda.org/conda-forge/linux-64/scikit-image-0.17.2-py39hde0f152_4.tar.bz2#2a58a7e382317b03f023b2fddf40f8a1
 https://conda.anaconda.org/conda-forge/noarch/seaborn-0.12.2-hd8ed1ab_0.conda#50847a47c07812f88581081c620f5160
+https://conda.anaconda.org/conda-forge/linux-64/matplotlib-3.3.4-py39hf3d152e_0.tar.bz2#cbaec993375a908bbe506dc7328d747c
+https://conda.anaconda.org/conda-forge/noarch/numpydoc-1.2-pyhd8ed1ab_0.tar.bz2#025ad7ca2c7f65007ab6b6f5d93a56eb
+https://conda.anaconda.org/conda-forge/noarch/sphinx-copybutton-0.5.2-pyhd8ed1ab_0.conda#ac832cc43adc79118cf6e23f1f9b8995
+https://conda.anaconda.org/conda-forge/noarch/sphinx-gallery-0.15.0-pyhd8ed1ab_0.conda#1a49ca9515ef9a96edff2eea06143dc6
+https://conda.anaconda.org/conda-forge/noarch/sphinx-prompt-1.3.0-py_0.tar.bz2#9363002e2a134a287af4e32ff0f26cdc
+https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-applehelp-1.0.7-pyhd8ed1ab_0.conda#aebfabcb60c33a89c1f9290cab49bc93
+https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-devhelp-1.0.5-pyhd8ed1ab_0.conda#ebf08f5184d8eaa486697bc060031953
+https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-htmlhelp-2.0.4-pyhd8ed1ab_0.conda#a9a89000dfd19656ad004b937eeb6828
+https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-qthelp-1.0.6-pyhd8ed1ab_0.conda#cf5c9649272c677a964a7313279e3a9b
+https://conda.anaconda.org/conda-forge/noarch/sphinx-6.0.0-pyhd8ed1ab_2.conda#ac1d3b55da1669ee3a56973054fd7efb
+https://conda.anaconda.org/conda-forge/noarch/sphinxcontrib-serializinghtml-1.1.9-pyhd8ed1ab_0.conda#0612e497d7860728f2cda421ea2aec09
 # pip sphinxext-opengraph @ https://files.pythonhosted.org/packages/50/ac/c105ed3e0a00b14b28c0aa630935af858fd8a32affeff19574b16e2c6ae8/sphinxext_opengraph-0.4.2-py3-none-any.whl#sha256=a51f2604f9a5b6c0d25d3a88e694d5c02e20812dc0e482adf96c8628f9109357
diff --git a/build_tools/cirrus/arm_tests.yml b/build_tools/cirrus/arm_tests.yml
index 8fe3c7b6153f2..09874e081b460 100644
--- a/build_tools/cirrus/arm_tests.yml
+++ b/build_tools/cirrus/arm_tests.yml
@@ -8,7 +8,7 @@ linux_aarch64_test_task:
     memory: 6G
   env:
     CONDA_ENV_NAME: testenv
-    LOCK_FILE: build_tools/cirrus/py39_conda_forge_linux-aarch64_conda.lock
+    LOCK_FILE: build_tools/cirrus/pymin_conda_forge_linux-aarch64_conda.lock
     CONDA_PKGS_DIRS: /root/.conda/pkgs
     HOME: /  # $HOME is not defined in image and is required to install mambaforge
     # Upload tokens have been encrypted via the CirrusCI interface:
@@ -19,7 +19,7 @@ linux_aarch64_test_task:
     folder: /root/.cache/ccache
   conda_cache:
     folder: /root/.conda/pkgs
-    fingerprint_script: cat build_tools/cirrus/py39_conda_forge_linux-aarch64_conda.lock
+    fingerprint_script: cat build_tools/cirrus/pymin_conda_forge_linux-aarch64_conda.lock
 
   install_python_script: |
     # Install python so that update_tracking_issue has access to a Python
diff --git a/build_tools/cirrus/arm_wheel.yml b/build_tools/cirrus/arm_wheel.yml
index dcc52fddfd9ff..85315adb89c5f 100644
--- a/build_tools/cirrus/arm_wheel.yml
+++ b/build_tools/cirrus/arm_wheel.yml
@@ -62,9 +62,6 @@ linux_arm64_wheel_task:
     BOT_GITHUB_TOKEN: ENCRYPTED[9b50205e2693f9e4ce9a3f0fcb897a259289062fda2f5a3b8aaa6c56d839e0854a15872f894a70fca337dd4787274e0f]
   matrix:
     # Only the latest Python version is tested
-    - env:
-        CIBW_BUILD: cp38-manylinux_aarch64
-        CIBW_TEST_SKIP: "*_aarch64"
     - env:
         CIBW_BUILD: cp39-manylinux_aarch64
         CIBW_TEST_SKIP: "*_aarch64"
diff --git a/build_tools/cirrus/py39_conda_forge_environment.yml b/build_tools/cirrus/pymin_conda_forge_environment.yml
similarity index 100%
rename from build_tools/cirrus/py39_conda_forge_environment.yml
rename to build_tools/cirrus/pymin_conda_forge_environment.yml
diff --git a/build_tools/cirrus/py39_conda_forge_linux-aarch64_conda.lock b/build_tools/cirrus/pymin_conda_forge_linux-aarch64_conda.lock
similarity index 100%
rename from build_tools/cirrus/py39_conda_forge_linux-aarch64_conda.lock
rename to build_tools/cirrus/pymin_conda_forge_linux-aarch64_conda.lock
diff --git a/build_tools/update_environments_and_lock_files.py b/build_tools/update_environments_and_lock_files.py
index df99c69048e19..93c5f45397692 100644
--- a/build_tools/update_environments_and_lock_files.py
+++ b/build_tools/update_environments_and_lock_files.py
@@ -147,23 +147,23 @@ def remove_from(alist, to_remove):
         },
     },
     {
-        "build_name": "py38_conda_defaults_openblas",
+        "build_name": "pymin_conda_defaults_openblas",
         "folder": "build_tools/azure",
         "platform": "linux-64",
         "channel": "defaults",
         "conda_dependencies": common_dependencies + ["ccache"],
         "package_constraints": {
-            "python": "3.8",
+            "python": "3.9",
             "blas": "[build=openblas]",
-            "numpy": "min",
-            "scipy": "min",
+            "numpy": "1.21",  # the min version is not available on the defaults channel
+            "scipy": "1.7",  # the min version has some low level crashes
             "matplotlib": "min",
             "threadpoolctl": "2.2.0",
             "cython": "min",
         },
     },
     {
-        "build_name": "py38_conda_forge_openblas_ubuntu_2204",
+        "build_name": "pymin_conda_forge_openblas_ubuntu_2204",
         "folder": "build_tools/azure",
         "platform": "linux-64",
         "channel": "conda-forge",
@@ -173,7 +173,7 @@ def remove_from(alist, to_remove):
             + ["ccache"]
         ),
         "package_constraints": {
-            "python": "3.8",
+            "python": "3.9",
             "blas": "[build=openblas]",
         },
     },
@@ -247,7 +247,7 @@ def remove_from(alist, to_remove):
         },
     },
     {
-        "build_name": "py38_conda_forge_mkl",
+        "build_name": "pymin_conda_forge_mkl",
         "folder": "build_tools/azure",
         "platform": "win-64",
         "channel": "conda-forge",
@@ -256,7 +256,7 @@ def remove_from(alist, to_remove):
             "pip",
         ],
         "package_constraints": {
-            "python": "3.8",
+            "python": "3.9",
             "blas": "[build=mkl]",
         },
     },
@@ -280,7 +280,7 @@ def remove_from(alist, to_remove):
         ],
         "pip_dependencies": ["sphinxext-opengraph"],
         "package_constraints": {
-            "python": "3.8",
+            "python": "3.9",
             "numpy": "min",
             "scipy": "min",
             "matplotlib": "min",
@@ -321,7 +321,7 @@ def remove_from(alist, to_remove):
         },
     },
     {
-        "build_name": "py39_conda_forge",
+        "build_name": "pymin_conda_forge",
         "folder": "build_tools/cirrus",
         "platform": "linux-aarch64",
         "channel": "conda-forge",
diff --git a/build_tools/wheels/build_wheels.sh b/build_tools/wheels/build_wheels.sh
index 85a94e5feb627..d4283a7058e95 100755
--- a/build_tools/wheels/build_wheels.sh
+++ b/build_tools/wheels/build_wheels.sh
@@ -35,14 +35,6 @@ if [[ $(uname) == "Darwin" ]]; then
     export CFLAGS="$CFLAGS -I$PREFIX/include"
     export CXXFLAGS="$CXXFLAGS -I$PREFIX/include"
     export LDFLAGS="$LDFLAGS -Wl,-rpath,$PREFIX/lib -L$PREFIX/lib -lomp"
-
-    if [[ $(uname -m) == "arm64" && "$CIBW_BUILD" == "cp38-macosx_arm64" ]]; then
-        # Enables native building and testing for macosx arm on Python 3.8. For details see:
-        # https://cibuildwheel.readthedocs.io/en/stable/faq/#macos-building-cpython-38-wheels-on-arm64
-        curl -o /tmp/Python38.pkg https://www.python.org/ftp/python/3.8.10/python-3.8.10-macos11.pkg
-        sudo installer -pkg /tmp/Python38.pkg -target /
-        sh "/Applications/Python 3.8/Install Certificates.command"
-    fi
 fi
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 7d53453c748a3..922f23bd54725 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,19 +4,13 @@ requires = [
     "setuptools",
     "wheel",
     "Cython>=0.29.33",
-
-    # Starting with NumPy 1.25, NumPy is (by default) as far back compatible
-    # as oldest-support-numpy was (customizable with a NPY_TARGET_VERSION
-    # define).  For older Python versions continue using oldest-support-numpy.
-    "numpy>=1.25; python_version>='3.9'",
-    "oldest-supported-numpy; python_version<'3.9'",
-
-    "scipy>=1.5.0",
+    "numpy>=1.25",
+    "scipy>=1.6.0",
 ]
 
 [tool.black]
 line-length = 88
-target_version = ['py38', 'py39', 'py310']
+target_version = ['py39', 'py310', 'py311']
 preview = true
 exclude = '''
 /(
diff --git a/setup.py b/setup.py
index 9038b3e8868b4..bc1921a06ebb8 100755
--- a/setup.py
+++ b/setup.py
@@ -566,8 +566,8 @@ def configure_extension_modules():
 
 
 def setup_package():
-    python_requires = ">=3.8"
-    required_python_version = (3, 8)
+    python_requires = ">=3.9"
+    required_python_version = (3, 9)
 
     metadata = dict(
         name=DISTNAME,
@@ -594,7 +594,6 @@ def setup_package():
             "Operating System :: Unix",
             "Operating System :: MacOS",
             "Programming Language :: Python :: 3",
-            "Programming Language :: Python :: 3.8",
             "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",
             "Programming Language :: Python :: 3.11",
diff --git a/sklearn/_min_dependencies.py b/sklearn/_min_dependencies.py
index a4c0ebb3b2d71..e52034fa5a1e6 100644
--- a/sklearn/_min_dependencies.py
+++ b/sklearn/_min_dependencies.py
@@ -1,19 +1,10 @@
 """All minimum dependencies for scikit-learn."""
 import argparse
-import platform
 from collections import defaultdict
 
 # scipy and cython should by in sync with pyproject.toml
-
-# NumPy version should match oldest-supported-numpy for the minimum supported
-# Python version.
-# see: https://github.com/scipy/oldest-supported-numpy/blob/main/setup.cfg
-if platform.python_implementation() == "PyPy":
-    NUMPY_MIN_VERSION = "1.19.2"
-else:
-    NUMPY_MIN_VERSION = "1.17.3"
-
-SCIPY_MIN_VERSION = "1.5.0"
+NUMPY_MIN_VERSION = "1.19.5"
+SCIPY_MIN_VERSION = "1.6.0"
 JOBLIB_MIN_VERSION = "1.2.0"
 THREADPOOLCTL_MIN_VERSION = "2.0.0"
 PYTEST_MIN_VERSION = "7.1.2"
@@ -30,8 +21,8 @@
     "threadpoolctl": (THREADPOOLCTL_MIN_VERSION, "install"),
     "cython": (CYTHON_MIN_VERSION, "build"),
     "matplotlib": ("3.3.4", "benchmark, docs, examples, tests"),
-    "scikit-image": ("0.16.2", "docs, examples, tests"),
-    "pandas": ("1.0.5", "benchmark, docs, examples, tests"),
+    "scikit-image": ("0.17.2", "docs, examples, tests"),
+    "pandas": ("1.1.5", "benchmark, docs, examples, tests"),
     "seaborn": ("0.9.0", "docs, examples"),
     "memory_profiler": ("0.57.0", "benchmark, docs"),
     "pytest": (PYTEST_MIN_VERSION, "tests"),
diff --git a/sklearn/datasets/tests/test_svmlight_format.py b/sklearn/datasets/tests/test_svmlight_format.py
index 21614be8dbb04..27651c80331c6 100644
--- a/sklearn/datasets/tests/test_svmlight_format.py
+++ b/sklearn/datasets/tests/test_svmlight_format.py
@@ -236,9 +236,10 @@ def test_load_large_qid():
 
 def test_load_invalid_file2():
     with pytest.raises(ValueError):
-        with _path(TEST_DATA_MODULE, datafile) as data_path, _path(
-            TEST_DATA_MODULE, invalidfile
-        ) as invalid_path:
+        with (
+            _path(TEST_DATA_MODULE, datafile) as data_path,
+            _path(TEST_DATA_MODULE, invalidfile) as invalid_path,
+        ):
             load_svmlight_files([str(data_path), str(invalid_path), str(data_path)])