diff --git a/package.json b/package.json
index 4c5c5c8..bbe367a 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "arbitrary-precision": "^1.1.2",
     "gulp": "^3.9.0",
     "gulp-coveralls": "^0.1.4",
-    "gulp-istanbul": "^0.10.2",
+    "gulp-istanbul": "^1.1.0",
     "gulp-mocha": "^2.1.3",
     "rimraf": "^2.4.3",
     "should": "^8.0.1"