diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bf6123f..1e41532 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,7 +28,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@2.11.0
         with:
           php-version: ${{ matrix.php-versions }}
           coverage: xdebug