diff --git a/package.json b/package.json
index c5281fd..f35df02 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "@types/supertest": "^2.0.4",
     "ava": "^0.25.0",
     "koa": "^2.5.0",
-    "nyc": "^12.0.1",
+    "nyc": "^14.1.0",
     "shelljs": "^0.8.1",
     "standard-version": "^4.3.0",
     "supertest": "^3.0.0",