diff --git a/package.json b/package.json
index 56972f0..952d1b4 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "babel-cli": "^6.9.0",
     "babel-core": "^6.9.1",
     "babel-plugin-add-module-exports": "^0.2.1",
-    "babel-plugin-istanbul": "^2.0.0",
+    "babel-plugin-istanbul": "^4.1.3",
     "babel-preset-es2015": "^6.9.0",
     "babel-register": "^6.11.6",
     "codecov": "^1.0.1",