diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8a1ea4e..fd0561b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -21,7 +21,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [ 'stable', 'oldstable' ]
+        go-version: [ 'stable', 'oldstable', 1.21.x ]
         platform: [ ubuntu-latest, macos-latest, windows-latest ]
 
     runs-on: ${{ matrix.platform }}