diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 09e44a1..fbb2944 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-version: ['7.3', '7.4', '8.0']
+        php-version: ['7.3', '7.4', '8.0', '8.1']
 
     steps:
       - uses: actions/checkout@v2