diff --git a/package.json b/package.json
index d020367..791d1f6 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "grunt-coveralls": "^1.0.1",
     "grunt-replace": "^1.0.1",
     "gruntify-eslint": "^4.0.0",
-    "istanbul-lib-instrument": "^1.1.3",
+    "istanbul-lib-instrument": "^3.3.0",
     "jsdom": "^9.6.0",
     "mocha": "^3.1.0",
     "nyc": "^8.3.1",