diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 17d8878..50cfb79 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,6 +25,7 @@ jobs:
           - "1.18"
           - "1.19"
           - "1.20"
+          - "1.21"
 
     steps:
       - name: Checkout