diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index bec2ca01..d10cb159 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -59,7 +59,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0']
+        php: ['5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1']
         wp: ['latest']
         mysql: ['8.0']
         include: