diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2b0b287..aed019e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,6 +14,7 @@ jobs:
           - ubuntu-20.04
           - windows-2019
         php:
+          - 8.1
           - 8.0
           - 7.4
           - 7.3