diff --git a/build_tools/circle/doc_environment.yml b/build_tools/circle/doc_environment.yml
index 4f0e41927c784..ea930fadcb528 100644
--- a/build_tools/circle/doc_environment.yml
+++ b/build_tools/circle/doc_environment.yml
@@ -11,7 +11,7 @@ dependencies:
   - cython
   - joblib
   - threadpoolctl
-  - matplotlib<3.9
+  - matplotlib
   - pandas
   - pyamg
   - pytest
diff --git a/build_tools/circle/doc_linux-64_conda.lock b/build_tools/circle/doc_linux-64_conda.lock
index 915930504493a..d1c0fe1e6ddf2 100644
--- a/build_tools/circle/doc_linux-64_conda.lock
+++ b/build_tools/circle/doc_linux-64_conda.lock
@@ -1,6 +1,6 @@
 # Generated by conda-lock.
 # platform: linux-64
-# input_hash: 92691d82bff911619dfa8492dcfc15ec0f09ee96f9dc2d23f1e40004149ffefe
+# input_hash: f6f3862aafcafa139a322e498517c3db58e1b8db95f1b1ca8c18f5b70d446dc9
 @EXPLICIT
 https://conda.anaconda.org/conda-forge/linux-64/_libgcc_mutex-0.1-conda_forge.tar.bz2#d7c89558ba9fa0495403155b64376d81
 https://conda.anaconda.org/conda-forge/noarch/_sysroot_linux-64_curr_repodata_hack-3-h69a702a_16.conda#1c005af0c6ff22814b7c52ee448d4bea
@@ -91,6 +91,7 @@ https://conda.anaconda.org/conda-forge/linux-64/ninja-1.12.1-h297d8ca_0.conda#3a
 https://conda.anaconda.org/conda-forge/linux-64/nspr-4.35-h27087fc_0.conda#da0ec11a6454ae19bff5b02ed881a2b1
 https://conda.anaconda.org/conda-forge/linux-64/pcre2-10.44-h0f59acf_0.conda#3914f7ac1761dce57102c72ca7c35d01
 https://conda.anaconda.org/conda-forge/linux-64/pixman-0.43.2-h59595ed_0.conda#71004cbf7924e19c02746ccde9fd7123
+https://conda.anaconda.org/conda-forge/linux-64/qhull-2020.2-h434a139_5.conda#353823361b1d27eb3960efb076dfcaf6
 https://conda.anaconda.org/conda-forge/linux-64/readline-8.2-h8228510_1.conda#47d31b792659ce70f470b5c82fdfb7a4
 https://conda.anaconda.org/conda-forge/linux-64/snappy-1.2.1-ha2e4443_0.conda#6b7dcc7349efd123d493d2dbe85a045f
 https://conda.anaconda.org/conda-forge/linux-64/svt-av1-2.1.2-hac33072_0.conda#06c5dec4ebb47213b648a6c4dc8400d6
@@ -148,7 +149,7 @@ https://conda.anaconda.org/conda-forge/noarch/imagesize-1.4.1-pyhd8ed1ab_0.tar.b
 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-py39h7633fee_1.conda#c9f74d717e5a2847a9f8b779c54130f2
 https://conda.anaconda.org/conda-forge/linux-64/lcms2-2.16-hb7c19ff_0.conda#51bb7010fc86f70eee639b4bb7a894f5
-https://conda.anaconda.org/conda-forge/linux-64/libblas-3.9.0-22_linux64_openblas.conda#1a2a0cd3153464fee6646f3dd6dad9b8
+https://conda.anaconda.org/conda-forge/linux-64/libblas-3.9.0-23_linux64_openblas.conda#96c8450a40aa2b9733073a9460de972c
 https://conda.anaconda.org/conda-forge/linux-64/libcups-2.3.3-h4637d8d_4.conda#d4529f4dff3057982a7617c7ac58fde3
 https://conda.anaconda.org/conda-forge/linux-64/libllvm15-15.0.7-hb3ce162_4.conda#8a35df3cbc0c8b12cc8af9473ae75eef
 https://conda.anaconda.org/conda-forge/linux-64/libllvm18-18.1.8-h8b73ec9_1.conda#16d94b3586ef3558e5a583598524deb4
@@ -206,12 +207,12 @@ https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-8.0.0-pyha770c7
 https://conda.anaconda.org/conda-forge/noarch/importlib_resources-6.4.0-pyhd8ed1ab_0.conda#c5d3907ad8bd7bf557521a1833cf7e6d
 https://conda.anaconda.org/conda-forge/noarch/jinja2-3.1.4-pyhd8ed1ab_0.conda#7b86ecb7d3557821c649b3c31e3eb9f2
 https://conda.anaconda.org/conda-forge/noarch/joblib-1.4.2-pyhd8ed1ab_0.conda#25df261d4523d9f9783bcdb7208d872f
-https://conda.anaconda.org/conda-forge/linux-64/libcblas-3.9.0-22_linux64_openblas.conda#4b31699e0ec5de64d5896e580389c9a1
+https://conda.anaconda.org/conda-forge/linux-64/libcblas-3.9.0-23_linux64_openblas.conda#eede29b40efa878cbe5bdcb767e97310
 https://conda.anaconda.org/conda-forge/linux-64/libclang-cpp15-15.0.7-default_h127d8a8_5.conda#d0a9633b53cdc319b8a1a532ae7822b8
 https://conda.anaconda.org/conda-forge/linux-64/libclang13-18.1.8-default_h9def88c_1.conda#04c8c481b30c3fe62bec148fa4a75857
 https://conda.anaconda.org/conda-forge/linux-64/libflac-1.4.3-h59595ed_0.conda#ee48bf17cc83a00f59ca1494d5646869
 https://conda.anaconda.org/conda-forge/linux-64/libgpg-error-1.50-h4f305b6_0.conda#0d7ff1a8e69565ca3add6925e18e708f
-https://conda.anaconda.org/conda-forge/linux-64/liblapack-3.9.0-22_linux64_openblas.conda#b083767b6c877e24ee597d93b87ab838
+https://conda.anaconda.org/conda-forge/linux-64/liblapack-3.9.0-23_linux64_openblas.conda#2af0879961951987e464722fd00ec1e0
 https://conda.anaconda.org/conda-forge/linux-64/libxkbcommon-1.7.0-h2c5496b_1.conda#e2eaefa4de2b7237af7c907b8bbc760a
 https://conda.anaconda.org/conda-forge/noarch/memory_profiler-0.61.0-pyhd8ed1ab_0.tar.bz2#8b45f9f2b2f7a98b0ec179c8991a4a9b
 https://conda.anaconda.org/conda-forge/noarch/meson-1.5.0-pyhd8ed1ab_0.conda#9d971c5bf99aed063664d6650e7e7ed8
@@ -229,14 +230,14 @@ https://conda.anaconda.org/conda-forge/linux-64/harfbuzz-9.0.0-hfac3d4d_0.conda#
 https://conda.anaconda.org/conda-forge/noarch/importlib-resources-6.4.0-pyhd8ed1ab_0.conda#dcbadab7a68738a028e195ab68ab2d2e
 https://conda.anaconda.org/conda-forge/noarch/lazy_loader-0.4-pyhd8ed1ab_0.conda#a284ff318fbdb0dd83928275b4b6087c
 https://conda.anaconda.org/conda-forge/linux-64/libgcrypt-1.11.0-h4ab18f5_1.conda#14858a47d4cc995892e79f2b340682d7
-https://conda.anaconda.org/conda-forge/linux-64/liblapacke-3.9.0-22_linux64_openblas.conda#1fd156abd41a4992835952f6f4d951d0
+https://conda.anaconda.org/conda-forge/linux-64/liblapacke-3.9.0-23_linux64_openblas.conda#89d7bcdb1e9a72a73e36d8e29d2a2beb
 https://conda.anaconda.org/conda-forge/linux-64/libsndfile-1.2.2-hc60ed4a_1.conda#ef1910918dd895516a769ed36b5b3a4e
 https://conda.anaconda.org/conda-forge/noarch/meson-python-0.16.0-pyh0c530f3_0.conda#e16f0dbf502da873be9f9adb0dc52547
 https://conda.anaconda.org/conda-forge/linux-64/numpy-2.0.0-py39ha0965c0_0.conda#b411be2728ba5711fc9bcdb0efa2db71
 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-xdist-3.6.1-pyhd8ed1ab_0.conda#b39568655c127a9c4a44d178ac99b6d0
 https://conda.anaconda.org/conda-forge/linux-64/zstandard-0.23.0-py39h623c9ba_0.conda#a19d023682384c637cb356d270c276c0
-https://conda.anaconda.org/conda-forge/linux-64/blas-devel-3.9.0-22_linux64_openblas.conda#63ddb593595c9cf5eb08d3de54d66df8
+https://conda.anaconda.org/conda-forge/linux-64/blas-devel-3.9.0-23_linux64_openblas.conda#08b43a5c3d6cc13aeb69bd2cbc293196
 https://conda.anaconda.org/conda-forge/linux-64/compilers-1.7.0-ha770c72_1.conda#d8d07866ac3b5b6937213c89a1874f08
 https://conda.anaconda.org/conda-forge/linux-64/contourpy-1.2.1-py39h7633fee_0.conda#bdc188e59857d6efab332714e0d01d93
 https://conda.anaconda.org/conda-forge/linux-64/gst-plugins-base-1.24.5-hbaaba92_0.conda#4a485842570569ba754863b2c083b346
@@ -249,8 +250,8 @@ https://conda.anaconda.org/conda-forge/linux-64/polars-1.2.1-py39h883198d_0.cond
 https://conda.anaconda.org/conda-forge/linux-64/pywavelets-1.6.0-py39hd92a3bb_0.conda#32e26e16f60c568b17a82e3033a4d309
 https://conda.anaconda.org/conda-forge/linux-64/scipy-1.13.1-py39haf93ffa_0.conda#492a2cd65862d16a4aaf535ae9ccb761
 https://conda.anaconda.org/conda-forge/noarch/urllib3-2.2.2-pyhd8ed1ab_1.conda#e804c43f58255e977093a2298e442bb8
-https://conda.anaconda.org/conda-forge/linux-64/blas-2.122-openblas.conda#5065468105542a8b23ea47bd8b6fa55f
-https://conda.anaconda.org/conda-forge/linux-64/matplotlib-base-3.8.4-py39h10d1fc8_2.conda#c9fb6571b93b1dd490ea627af7344f36
+https://conda.anaconda.org/conda-forge/linux-64/blas-2.123-openblas.conda#7f4b3ea1cdd6e50dca2a226abda6e2d9
+https://conda.anaconda.org/conda-forge/linux-64/matplotlib-base-3.9.1-py39hd75cb13_0.conda#31dbb5b27008fabf74d67da272f5e002
 https://conda.anaconda.org/conda-forge/linux-64/pulseaudio-client-17.0-hb77b528_0.conda#07f45f1be1c25345faddb8db0de8039b
 https://conda.anaconda.org/conda-forge/linux-64/pyamg-5.2.1-py39h85c637f_0.conda#0bfaf33b7ebdbadc77bf9a67e281c0b1
 https://conda.anaconda.org/conda-forge/noarch/requests-2.32.3-pyhd8ed1ab_0.conda#5ede4753180c7a550a443c430dc8ab52
@@ -262,7 +263,7 @@ https://conda.anaconda.org/conda-forge/linux-64/scikit-image-0.24.0-py39hfc16268
 https://conda.anaconda.org/conda-forge/noarch/seaborn-base-0.13.2-pyhd8ed1ab_2.conda#b713b116feaf98acdba93ad4d7f90ca1
 https://conda.anaconda.org/conda-forge/linux-64/pyqt-5.15.9-py39h52134e7_5.conda#e1f148e57d071b09187719df86f513c1
 https://conda.anaconda.org/conda-forge/noarch/seaborn-0.13.2-hd8ed1ab_2.conda#a79d8797f62715255308d92d3a91ef2e
-https://conda.anaconda.org/conda-forge/linux-64/matplotlib-3.8.4-py39hf3d152e_2.conda#bd956c7563b6a6b27521b83623c74e22
+https://conda.anaconda.org/conda-forge/linux-64/matplotlib-3.9.1-py39hf3d152e_0.conda#9d2e01516067eadfa9a3471778991e9d
 https://conda.anaconda.org/conda-forge/noarch/numpydoc-1.7.0-pyhd8ed1ab_1.conda#66798cbfdcb003d9fbccd92cd08eb3ac
 https://conda.anaconda.org/conda-forge/noarch/pydata-sphinx-theme-0.15.4-pyhd8ed1ab_0.conda#c7c50dd5192caa58a05e6a4248a27acb
 https://conda.anaconda.org/conda-forge/noarch/sphinx-copybutton-0.5.2-pyhd8ed1ab_0.conda#ac832cc43adc79118cf6e23f1f9b8995
diff --git a/build_tools/update_environments_and_lock_files.py b/build_tools/update_environments_and_lock_files.py
index db3d5e8ff17e9..e6c7e978ff100 100644
--- a/build_tools/update_environments_and_lock_files.py
+++ b/build_tools/update_environments_and_lock_files.py
@@ -376,13 +376,6 @@ def remove_from(alist, to_remove):
         ],
         "package_constraints": {
             "python": "3.9",
-            # TODO: this needs to be adapted when matplotlib 3.11 is out. In
-            # the meantime, this avoids a warning in matplotlib 3.9 boxplot
-            # labels has been renamed to tick_labels. Possible options:
-            # - bump minimum matplotlib supported versions to 3.9 at one point
-            # - complicate the example code to do the right thing depending on
-            #   maplotlib version
-            "matplotlib": "<3.9",
         },
     },
     {