diff --git a/package.json b/package.json
index 5e30640..e1c0e2a 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "gulp": "^3.9.0",
     "gulp-babel": "^6.0.0",
     "gulp-eslint": "^3.0.1",
-    "gulp-istanbul": "^1.0.0",
+    "gulp-istanbul": "^1.1.1",
     "gulp-mocha": "^3.0.0"
   }
 }