diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index f2ef7e5..55bc492 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -22,7 +22,7 @@ jobs:
 
     - name: Cache Composer packages
       id: composer-cache
-      uses: actions/cache@v5
+      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5
       with:
         path: vendor
         key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}