diff --git a/package.json b/package.json
index a3d5820..16ca1fb 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
         "sinon": "^4.1.2",
         "sinon-chai": "^2.14.0",
         "tslint": "5.8.0",
-        "tsutils": "^2.14.0",
+        "tsutils": "^2.15.0",
         "typedoc": "^0.9.0",
         "typescript": "^2.6.2",
         "webpack": "^3.10.0"