diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 70cdda4..16929a7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,7 @@ jobs:
 
       matrix:
         php:
+          - '8.1'
           - '8.2'
           - '8.3'