diff --git a/package.json b/package.json
index 445a6d8..1ada5bd 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
   },
   "devDependencies": {
     "assume": "~1.5.0",
-    "browserify": "~14.5.0",
+    "browserify": "~15.0.0",
     "mocha": "~4.1.0",
     "nyc": "~11.4.1",
     "pre-commit": "~1.2.0",