diff --git a/package.json b/package.json
index b0b652a..42fbfea 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
   },
   "devDependencies": {
     "bluebird": "^3.4.7",
-    "browserify": "^14.1.0",
+    "browserify": "^15.2.0",
     "chai": "^3.5.0",
     "chai-as-promised": "^6.0.0",
     "es3ify": "^0.2.2",