diff --git a/package.json b/package.json
index 8662abf..1e7f590 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
   },
   "devDependencies": {
     "@types/mocha": "^2.2.41",
-    "assert": "^1.3.0",
+    "assert": "^2.0.0",
     "mocha": "^6.0.2",
     "rimraf": "^2.5.2",
     "ts-node": "^8.0.2",