diff --git a/.github/workflows/wheel-macos.yml b/.github/workflows/wheel-macos.yml
index 72443b6b2862..3ee771e53893 100644
--- a/.github/workflows/wheel-macos.yml
+++ b/.github/workflows/wheel-macos.yml
@@ -49,6 +49,8 @@ jobs:
     - name: ccache
       if: github.event_name != 'schedule'
       uses: hendrikmuhs/ccache-action@v1.2
+      with:
+        key: ${{ matrix.os }}-${{ github.job }}-${{ matrix.python_version }}
 
     - name: Building SUMO / Libsumo wheels
       run: |