diff --git a/.github/workflows/mutation_testing.yml b/.github/workflows/mutation_testing.yml
index 4f57599..5667427 100644
--- a/.github/workflows/mutation_testing.yml
+++ b/.github/workflows/mutation_testing.yml
@@ -22,7 +22,7 @@ jobs:
 
     - name: Cache Composer packages
       id: composer-cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: vendor
         key: ${{ runner.os }}-php-8.1-${{ hashFiles('**/composer.lock') }}
diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index 132c563..55cc599 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -31,7 +31,7 @@ jobs:
 
     - name: Cache Composer packages
       id: composer-cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: vendor
         key: ${{ runner.os }}-php-${{ matrix.php-versions }}-${{ hashFiles('**/composer.lock') }}