diff --git a/package.json b/package.json
index b655b9c..b15144a 100644
--- a/package.json
+++ b/package.json
@@ -81,7 +81,7 @@
     "babel-core": "6.26.0",
     "babel-loader": "6.4.1",
     "babel-plugin-external-helpers": "6.22.0",
-    "babel-plugin-istanbul": "4.1.5",
+    "babel-plugin-istanbul": "4.1.6",
     "babel-plugin-transform-es2015-modules-umd": "6.24.1",
     "babel-polyfill": "6.26.0",
     "babel-preset-es2015": "6.24.1",