diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..ec8a646
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: ".github/workflows"
+    schedule:
+      interval: "monthly"
+    groups:
+      actions:
+        patterns:
+          - "*"
diff --git a/.github/workflows/ci_workflows.yml b/.github/workflows/ci_workflows.yml
index 179eb53..c1d298c 100644
--- a/.github/workflows/ci_workflows.yml
+++ b/.github/workflows/ci_workflows.yml
@@ -6,6 +6,7 @@ on:
   schedule:
     # Run every Sunday at 06:53 UTC
     - cron: 53 6 * * 0
+  workflow_dispatch:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -13,13 +14,11 @@ concurrency:
 
 jobs:
   tests:
-    uses: OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml@v1
+    uses: OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml@8c0fde6f7e926df6ed7057255d29afa9c1ad5320 # v1.16.0
     with:
       envs: |
         - linux: codestyle
-        - linux: py37-test-pytestoldest
-        - macos: py37-test-pytest50
-        - windows: py38-test-pytest52
+        - windows: py38-test-pytestoldest
         - linux: py38-test-pytest53
         - macos: py39-test-pytest60
         - windows: py39-test-pytest61
@@ -32,7 +31,7 @@ jobs:
         - linux: py312-test-devdeps
   publish:
     needs: tests
-    uses: OpenAstronomy/github-actions-workflows/.github/workflows/publish_pure_python.yml@v1
+    uses: OpenAstronomy/github-actions-workflows/.github/workflows/publish_pure_python.yml@8c0fde6f7e926df6ed7057255d29afa9c1ad5320 # v1.16.0
     with:
       test_extras: test
       test_command: pytest $GITHUB_WORKSPACE/tests; pytest --arraydiff $GITHUB_WORKSPACE/tests
diff --git a/CHANGES.md b/CHANGES.md
index e9643bc..fd4df99 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,8 @@
+0.7 (unreleased)
+----------------
+
+- Minimum Python version is now 3.8. [#49]
+
 0.6.1 (2023-11-27)
 ------------------
 
diff --git a/pytest_arraydiff/plugin.py b/pytest_arraydiff/plugin.py
index 825c9b6..0801570 100755
--- a/pytest_arraydiff/plugin.py
+++ b/pytest_arraydiff/plugin.py
@@ -43,7 +43,7 @@
 abstractclassmethod = abc.abstractclassmethod
 
 
-class BaseDiff(object, metaclass=abc.ABCMeta):
+class BaseDiff(metaclass=abc.ABCMeta):
 
     @abstractstaticmethod
     def read(filename):
@@ -83,8 +83,8 @@ def compare(cls, reference_file, test_file, atol=None, rtol=None):
         try:
             np.testing.assert_allclose(array_ref, array_new, atol=atol, rtol=rtol)
         except AssertionError as exc:
-            message = "\n\na: {0}".format(test_file) + '\n'
-            message += "b: {0}".format(reference_file) + '\n'
+            message = f"\n\na: {test_file}" + '\n'
+            message += f"b: {reference_file}" + '\n'
             message += exc.args[0]
             return False, message
         else:
@@ -160,8 +160,8 @@ def compare(cls, reference_file, test_file, atol=None, rtol=None):
         try:
             pdt.assert_frame_equal(ref_data, test_data)
         except AssertionError as exc:
-            message = "\n\na: {0}".format(test_file) + '\n'
-            message += "b: {0}".format(reference_file) + '\n'
+            message = f"\n\na: {test_file}" + '\n'
+            message += f"b: {reference_file}" + '\n'
             message += exc.args[0]
             return False, message
         else:
@@ -251,7 +251,7 @@ def wrapper(*args, **kwargs):
         item.obj = array_interceptor(plugin, item.obj)
 
 
-class ArrayComparison(object):
+class ArrayComparison:
 
     def __init__(self, config, reference_dir=None, generate_dir=None, default_format='text'):
         self.config = config
@@ -272,7 +272,7 @@ def pytest_runtest_call(self, item):
         file_format = compare.kwargs.get('file_format', self.default_format)
 
         if file_format not in FORMATS:
-            raise ValueError("Unknown format: {0}".format(file_format))
+            raise ValueError(f"Unknown format: {file_format}")
 
         if 'extension' in compare.kwargs:
             extension = compare.kwargs['extension']
diff --git a/setup.cfg b/setup.cfg
index 68f7426..e7c6878 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -12,7 +12,6 @@ classifiers =
     Programming Language :: Python
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
@@ -29,25 +28,26 @@ long_description_content_type = text/x-rst
 [options]
 zip_safe = False
 packages = find:
-python_requires = >=3.7
+python_requires = >=3.8
 setup_requires =
     setuptools_scm
 install_requires =
-    pytest>=4.6
+    pytest>=5.0
     numpy
 
+# tables limitation is until 3.9.3 is out as that supports ARM OSX.
 [options.extras_require]
 test =
     astropy
     pandas
-    tables
+    tables;platform_machine!='arm64'
 
 [options.entry_points]
 pytest11 =
     pytest_arraydiff = pytest_arraydiff.plugin
 
 [tool:pytest]
-minversion = 4.6
+minversion = 5.0
 testpaths = tests
 xfail_strict = true
 markers =
diff --git a/tests/test_pytest_arraydiff.py b/tests/test_pytest_arraydiff.py
index da603fa..31c12cb 100644
--- a/tests/test_pytest_arraydiff.py
+++ b/tests/test_pytest_arraydiff.py
@@ -40,7 +40,7 @@ def test_succeeds_func_fits_hdu():
     return fits.PrimaryHDU(np.arange(3 * 5).reshape((3, 5)).astype(np.int64))
 
 
-class TestClass(object):
+class TestClass:
 
     @pytest.mark.array_compare(file_format='fits', reference_dir=reference_dir)
     def test_succeeds_class(self):
@@ -66,11 +66,11 @@ def test_fails():
         f.write(TEST_FAILING)
 
     # If we use --arraydiff, it should detect that the file is missing
-    code = subprocess.call('pytest --arraydiff {0}'.format(test_file), shell=True)
+    code = subprocess.call(f'pytest --arraydiff {test_file}', shell=True)
     assert code != 0
 
     # If we don't use --arraydiff option, the test should succeed
-    code = subprocess.call('pytest {0}'.format(test_file), shell=True)
+    code = subprocess.call(f'pytest {test_file}', shell=True)
     assert code == 0
 
 
@@ -102,7 +102,7 @@ def test_generate(file_format):
         assert b'File not found for comparison test' in grepexc.output
 
     # If we do generate, the test should succeed and a new file will appear
-    code = subprocess.call(['pytest', '--arraydiff-generate-path={0}'.format(gen_dir), test_file],
+    code = subprocess.call(['pytest', f'--arraydiff-generate-path={gen_dir}', test_file],
                            timeout=10)
     assert code == 0
     assert os.path.exists(os.path.join(gen_dir, 'test_gen.' + ('fits' if file_format == 'fits' else 'txt')))
@@ -130,8 +130,8 @@ def test_default_format(file_format):
     gen_dir = os.path.join(tmpdir, 'spam', 'egg')
 
     # If we do generate, the test should succeed and a new file will appear
-    code = subprocess.call('pytest -s --arraydiff-default-format={0}'
-                           ' --arraydiff-generate-path={1} {2}'.format(file_format, gen_dir, test_file), shell=True)
+    code = subprocess.call('pytest -s --arraydiff-default-format={}'
+                           ' --arraydiff-generate-path={} {}'.format(file_format, gen_dir, test_file), shell=True)
     assert code == 0
     assert os.path.exists(os.path.join(gen_dir, 'test_default.' + ('fits' if file_format == 'fits' else 'txt')))
 
diff --git a/tox.ini b/tox.ini
index 7fda9f0..f944009 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{37,38,39,310,311,312}-test{,-pytestoldest,-pytest50,-pytest52,-pytest53,-pytest60,-pytest61,-pytest62,-pytest70,-pytest71,-pytest72,-pytest73,-pytest74,-devdeps}
+    py{38,39,310,311,312}-test{,-pytestoldest,-pytest52,-pytest53,-pytest60,-pytest61,-pytest62,-pytest70,-pytest71,-pytest72,-pytest73,-pytest74,-devdeps}
     codestyle
 requires =
     setuptools >= 30.3.0
@@ -13,8 +13,7 @@ setenv =
     devdeps: PIP_EXTRA_INDEX_URL = https://pypi.anaconda.org/astropy/simple https://pypi.anaconda.org/liberfa/simple https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
 description = run tests
 deps =
-    pytestoldest: pytest==4.6.0
-    pytest50: pytest==5.0.*
+    pytestoldest: pytest==5.0.0
     pytest52: pytest==5.2.*
     pytest53: pytest==5.3.*
     pytest60: pytest==6.0.*