diff --git a/.github/workflows/self-test.yml b/.github/workflows/self-test.yml
index 1797995..5226810 100644
--- a/.github/workflows/self-test.yml
+++ b/.github/workflows/self-test.yml
@@ -45,7 +45,7 @@ jobs:
 
       - name: Cache the build artifacts
         id: cache-build
-        uses: actions/cache@v5
+        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: build
           key: ${{ runner.os }}-${{ hashFiles('docs/examples/demo/**') }}
diff --git a/action.yml b/action.yml
index 3440cb0..e1ae22d 100644
--- a/action.yml
+++ b/action.yml
@@ -265,7 +265,7 @@ runs:
 
     - name: Enable cache
       if: inputs.cache-enable == 'true' || inputs.cache-enable == true
-      uses: actions/cache@9255dc7a253b0ccc959486e2bca901246202afeb # v5.0.1
+      uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
       with:
         path: ${{ runner.temp }}/cpp-linter-action-cache
         key: cpp-linter-action_${{ runner.os }}_${{ steps.compute-cache-key.outputs.key }}