diff --git a/package.json b/package.json
index bcb923b..1076ad5 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "sinon": "^6.0.0",
     "sinon-chai": "^3.2.0",
     "tslint": "5.10.0",
-    "tsutils": "^2.27.1",
+    "tsutils": "^3.0.0",
     "typedoc": "^0.11.1",
     "typescript": "^2.9.2",
     "watch": "^1.0.2",