diff --git a/.github/workflows/nodejs-ci-action.yml b/.github/workflows/nodejs-ci-action.yml
index e28ce874..8505fd07 100644
--- a/.github/workflows/nodejs-ci-action.yml
+++ b/.github/workflows/nodejs-ci-action.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [16.x, 18.x, 20.x]
+        node-version: [16.x, 18.x, 20.x, 21.x]
 
     steps:
     - uses: actions/checkout@v2
diff --git a/package.json b/package.json
index 3832bfb1..123eb331 100644
--- a/package.json
+++ b/package.json
@@ -160,6 +160,6 @@
   },
   "types": "./dist/index.d.ts",
   "engines": {
-    "node": ">=16 <=20"
+    "node": ">=16 <=21"
   }
 }