diff --git a/.github/workflows/cpp-python-build.yml b/.github/workflows/cpp-python-build.yml
index eaa434116..13da32d45 100644
--- a/.github/workflows/cpp-python-build.yml
+++ b/.github/workflows/cpp-python-build.yml
@@ -455,7 +455,7 @@ jobs:
           path: |
             ~/Library/Caches/pip
             build/Testing/Temporary/CTestCostData.txt
-          key: ${{ matrix.os }}-${{ matrix.python-version }}-${{ hashFiles('tests\CMakeLists.txt', 'python\requirements.txt') }}
+          key: ${{ matrix.os }}-${{ matrix.python-version }}-${{ hashFiles('tests/CMakeLists.txt', 'python/requirements.txt') }}
       - name: Set up Python
         uses: actions/setup-python@v5
         with: