diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 320e3543..d4abcfc3 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -19,9 +19,7 @@ jobs:
         python-version: ["3.8", "3.9", "3.10", "3.11"]
         include:
           - os: macos-latest
-            python-version: 3.9
-          - os: windows-latest
-            python-version: 3.9
+            python-version: "3.10"
 
     steps:
       - name: Checkout source
@@ -45,4 +43,4 @@ jobs:
           pip freeze
 
       - name: Run tests
-        run: pytest --cov=pyerrors -vv
+        run: pytest --cov=pyerrors -vv -Werror
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index bfe66228..86267ae2 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -21,7 +21,7 @@ Please add docstrings to any new function, class or method you implement. The do
 When implementing a new feature or fixing a bug please add meaningful tests to the files in the `tests` directory which cover the new code.
 For all pull requests tests are executed for the most recent python releases via
 ```
-pytest
+pytest -vv -Werror
 pytest --nbmake examples/*.ipynb
 ```
 requiring `pytest`, `pytest-cov`, `pytest-benchmark`, `hypothesis` and `nbmake`. To install the test dependencies one can run `pip install pyerrors[test]`
diff --git a/setup.py b/setup.py
index f503358a..980ce3ab 100644
--- a/setup.py
+++ b/setup.py
@@ -25,7 +25,7 @@ setup(name='pyerrors',
       license="MIT",
       packages=find_packages(),
       python_requires='>=3.8.0',
-      install_requires=['numpy>=1.21', 'autograd>=1.5', 'numdifftools>=0.9.41', 'matplotlib>=3.5', 'scipy>=1.7', 'iminuit>=2.17', 'h5py>=3.8', 'lxml>=4.9', 'python-rapidjson>=1.9', 'pandas>=1.1'],
+      install_requires=['numpy>=1.24', 'autograd>=1.6', 'numdifftools>=0.9.41', 'matplotlib>=3.7', 'scipy>=1.10', 'iminuit>=2.21', 'h5py>=3.8', 'lxml>=4.9', 'python-rapidjson>=1.10', 'pandas>=2.0'],
       extras_require={'test': ['pytest', 'pytest-cov', 'pytest-benchmark', 'hypothesis']},
       classifiers=[
           'Development Status :: 5 - Production/Stable',