diff --git a/package.json b/package.json
index 148733c..edde664 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   "devDependencies": {
     "ava": "^0.21.0",
     "coveralls": "^2.13.1",
-    "nyc": "^11.0.3",
+    "nyc": "^12.0.1",
     "reshape-custom-elements": "^0.1.0",
     "reshape-expressions": "^0.1.5",
     "snazzy": "^7.0.0",