diff --git a/package.json b/package.json
index b40dfc2..4f90b02 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "eslint": "^4.7.2",
     "got": "^8.0.0",
     "mocha": "^5.0.0",
-    "nyc": "^11.0.2",
+    "nyc": "^11.7.3",
     "sinon": "^5.0.0"
   },
   "homepage": "https://github.com/gucong3000/postcss-pie#readme",