diff --git a/package.json b/package.json
index a991768..99c5a28 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "chai": "^4.1.2",
     "mocha": "^5.0.4",
     "mocha-parallel-tests": "^2.0.0",
-    "nyc": "^11.3.0",
+    "nyc": "^12.0.1",
     "ts-node": "^7.0.0",
     "typescript": "^2.6.1"
   },