diff --git a/.github/workflows/app-tests.yaml b/.github/workflows/app-tests.yaml
index 8343b06..89afbb4 100644
--- a/.github/workflows/app-tests.yaml
+++ b/.github/workflows/app-tests.yaml
@@ -117,7 +117,7 @@ jobs:
             npm run build
 
         - name: Setup mypy cache
-          uses: actions/cache@6849a6489940f00c2f30c0fb92c6274307ccb58a # v4.1.2
+          uses: actions/cache@0c907a75c2c80ebcb7f088228285e798b750cf8f # v4.2.1
           with:
             path: ./.mypy_cache
             key: mypy${{ matrix.os }}-${{ matrix.python_version }}-${{ hashFiles('requirements-dev.txt', 'src/backend/requirements.txt', 'src/backend/pyproject.toml') }}