diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
index 07bd06b..4064ebf 100644
--- a/.github/workflows/node.js.yml
+++ b/.github/workflows/node.js.yml
@@ -26,5 +26,4 @@ jobs:
       with:
         node-version: ${{ matrix.node-version }}
     - run: npm install
-    - run: npm install tslib
     - run: npm run test
diff --git a/package.json b/package.json
index b2b8278..03f8488 100644
--- a/package.json
+++ b/package.json
@@ -48,6 +48,7 @@
     "rollup-plugin-typescript2": "^0.30.0",
     "serve-handler": "^6.1.3",
     "ts-node": "^9.1.1",
+    "tslib": "^2.2.0",
     "typescript": "^4.3.2"
   }
 }