diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 5e8dc9f..b79a02f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -15,6 +15,7 @@ jobs:
         php:
           - 7.4
           - 8.0
+          - 8.1
         composer_args:
           - ''
           - '--prefer-stable'