diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index fb934b1..ab70f9d 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -14,6 +14,10 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
+    - uses: shivammathur/setup-php@v2
+      with:
+        php-version: '7.4'
+
     - name: Validate composer.json and composer.lock
       run: composer validate