diff --git a/.github/workflows/check-test-coverage.yml b/.github/workflows/check-test-coverage.yml
index c1eeae8..cd3e0c1 100644
--- a/.github/workflows/check-test-coverage.yml
+++ b/.github/workflows/check-test-coverage.yml
@@ -17,8 +17,11 @@ jobs:
     - name: Generate coverage report
       run: |
         python -m pip install --upgrade pip
-        pip install flake8 pytest
-        if [ -f requirements_dev.txt ]; then pip install -r requirements_dev.txt; fi
+        python -m pip install uv
+        uv venv
+        source .venv/bin/activate
+        uv pip install pytest flake8
+        if [ -f requirements_dev.txt ]; then uv pip install -r requirements_dev.txt; fi
         coverage run --source wqio check_wqio.py --doctest-modules --cov --cov-report=xml
     - name: Upload coverage reports to Codecov
       run: |
diff --git a/.github/workflows/python-runtests-basic.yml b/.github/workflows/python-runtests-basic.yml
index 178f01c..95965c8 100644
--- a/.github/workflows/python-runtests-basic.yml
+++ b/.github/workflows/python-runtests-basic.yml
@@ -26,8 +26,12 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install pytest
-        if [ -f requirements_dev.txt ]; then pip install -r requirements_dev.txt; fi
+        python -m pip install uv
+        uv venv
+        source .venv/bin/activate
+        uv pip install pytest
+        if [ -f requirements_dev.txt ]; then uv pip install -r requirements_dev.txt; fi
     - name: Test with pytest
       run: |
+        source .venv/bin/activate
         python check_wqio.py --doctest-modules
diff --git a/.github/workflows/python-runtests-img-comp.yml b/.github/workflows/python-runtests-img-comp.yml
index 253cf4a..3654653 100644
--- a/.github/workflows/python-runtests-img-comp.yml
+++ b/.github/workflows/python-runtests-img-comp.yml
@@ -22,9 +22,13 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install flake8 pytest
-        if [ -f requirements_dev.txt ]; then pip install -r requirements_dev.txt; fi
+        python -m pip install uv
+        uv venv
+        source .venv/bin/activate
+        uv pip install pytest
+        if [ -f requirements_dev.txt ]; then uv pip install -r requirements_dev.txt; fi
     - name: Test with pytest
       run: |
+        source .venv/bin/activate
         export MPL_IMGCOMP_TOLERANCE=20
         python check_wqio.py --strict --verbose