diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ae1ad66..a5aac08 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         operating-system: ['ubuntu-latest']
-        php-versions: ['7.4', '8.0']
+        php-versions: ['7.4', '8.0', '8.1']
         phpunit-versions: ['latest']
 
     steps: