diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 18450fb4..00f14e02 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -50,7 +50,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           coverage: "none"
-          php-version: "7.4"
+          php-version: "7.1"
       - name: "Install dependencies"
         run: "composer install"
       - name: "Run PHP_CodeSniffer"