diff --git a/package.json b/package.json
index c0a0c7f..d6d5bef 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
   "devDependencies": {
     "ava": "^0.18.0",
     "babel-cli": "^6.18.0",
-    "babel-plugin-istanbul": "^3.0.0",
+    "babel-plugin-istanbul": "^4.0.0",
     "babel-plugin-transform-unicode-property-regex": "^1.0.0",
     "bel": "^4.5.0",
     "coveralls": "^2.11.15",