diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 776e87a..4e63a4f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        php-versions: ['7.2', '7.4', '8.0']
+        php-versions: ['7.1', '7.2', '7.4', '8.0']
 
     steps:
     - uses: actions/checkout@v2