diff --git a/package.json b/package.json
index 9490c9b..7c1e5c4 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "coveralls": "^3.0.3",
     "jest": "^24.5.0",
     "ts-jest": "^24.0.0",
-    "tslib": "^1.9.3",
+    "tslib": "^2.0.0",
     "tslint": "^5.14.0",
     "typescript": "^3.3.3333"
   }