diff --git a/package.json b/package.json
index 678884b..acea444 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   "license": "MIT",
   "devDependencies": {
     "babel-plugin-add-module-exports": "^1.0.0",
-    "babel-plugin-istanbul": "^5.1.1",
+    "babel-plugin-istanbul": "^6.0.0",
     "babel-plugin-transform-es2015-modules-umd": "^6.18.0",
     "babel-preset-es2015": "^6.18.0",
     "coveralls": "^3.0.1",