diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 5ef9d48..dab1afd 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -56,7 +56,7 @@ jobs:
       # REFER: https://github.com/actions/setup-python#caching-packages-dependencies
       - name: Setup pip cache
         id: pip-cache
-        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ matrix.dependency-set }}-${{ hashFiles('pyproject.toml', 'requirements-generated.txt', 'dev-requirements-generated.txt')}}