diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 666b3e2..b18665b 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         platform: [ubuntu-latest]
-        node-version: [18, 20]
+        node-version: [18, 20, 21]
 
     runs-on: ${{ matrix.platform }}