diff --git a/package.json b/package.json
index 678884b..5eff4c9 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "jsdom-global": "^3.0.2",
     "load-grunt-tasks": "^4.0.0",
     "mocha": "^6.0.0",
-    "nyc": "^14.0.0",
+    "nyc": "^15.0.0",
     "unexpected": "^11.0.1"
   },
   "babel": {