diff --git a/.github/actions/set-up-legacy-python/action.yml b/.github/actions/set-up-legacy-python/action.yml
index 791c7db8..18fec72e 100644
--- a/.github/actions/set-up-legacy-python/action.yml
+++ b/.github/actions/set-up-legacy-python/action.yml
@@ -20,6 +20,20 @@ runs:
       with:
         default: "${{ inputs.python-version }}"
         command: pip install -U pip
+
+    - name: Restore PATH on cache hit
+      if: steps.pyenv-cache.outputs.cache-hit == 'true'
+      shell: bash
+      run: |
+        PYENV_ROOT="/opt/hostedtoolcache/pyenv_root/2.4.20/x64"
+        PYTHON_BIN="$PYENV_ROOT/versions/${{ inputs.python-version }}/bin"
+        echo "$PYTHON_BIN" >> $GITHUB_PATH
+
+    - name: Verify Python version
+      shell: bash
+      run: |
+        echo "Active Python: $(python --version)"
+        python --version 2>&1 | grep -q "^Python ${{ inputs.python-version }}" || (echo "ERROR: Expected Python ${{ inputs.python-version }}" && exit 1)
     - name: Install dependencies
       run: |
         python -m pip install flake8 pytest setuptools wheel
diff --git a/.github/workflows/python-tests.yml b/.github/workflows/python-tests.yml
index db5076da..0f6e32b0 100644
--- a/.github/workflows/python-tests.yml
+++ b/.github/workflows/python-tests.yml
@@ -27,6 +27,11 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+      - name: Verify Python version
+        shell: bash
+        run: |
+          echo "Active Python: $(python --version)"
+          python --version 2>&1 | grep -q "^Python ${{ inputs.python-version }}" || (echo "ERROR: Expected Python ${{ inputs.python-version }}" && exit 1)
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
@@ -34,13 +39,13 @@ jobs:
           if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
       - name: Lint with flake8
         run: |
-          flake8 . --ignore=E203,W503,E722,E731 --max-complexity=100 --max-line-length=160
+          python -m flake8 . --ignore=E203,W503,E722,E731 --max-complexity=100 --max-line-length=160
       - name: Lint with pyright (type checking)
         run: |
-          pyright cfbs --pythonversion ${{ matrix.python-version }}
+          python -m pyright cfbs --pythonversion ${{ matrix.python-version }}
       - name: Test with pytest
         run: |
-          pytest
+          python -m pytest
       - name: Install
         run: |
           python setup.py sdist bdist_wheel