diff --git a/package.json b/package.json
index 2bb3e1c..c82fd3d 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
   "devDependencies": {
     "babel-cli": "^6.11.4",
     "babel-core": "^6.13.2",
-    "babel-plugin-istanbul": "^2.0.0",
+    "babel-plugin-istanbul": "^4.1.3",
     "babel-plugin-transform-runtime": "^6.12.0",
     "babel-preset-es2015": "^6.13.2",
     "babel-register": "^6.11.6",