diff --git a/package.json b/package.json
index 887b06b..901dacf 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "eslint": "^4.11.0",
     "eslint-config-pedant": "^1.0.0",
     "mocha": "^5.0.0",
-    "nyc": "^12.0.1",
+    "nyc": "^15.1.0",
     "proxyquire": "^1.8.0",
     "sinon": "^4.1.2",
     "sinon-chai": "^2.14.0"