diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index d073aa4..8a86e15 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -24,7 +24,7 @@ jobs:
         run: composer validate
       - name: Cache dependencies
         id: cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: vendor
           key: ${{ runner.os }}-build-${{ matrix.php-versions }}-${{ hashFiles('composer.json') }}