diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 39afa38..c39e844 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: [ '7.4', '8.0' ]
+        php-versions: [ '7.4', '8.0', '8.1' ]
     name: Testing on PHP ${{ matrix.php-versions }}
     steps:
       - name: Checkout