diff --git a/package.json b/package.json
index 10a854b..ce9acdb 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "live-server": "0.9.2",
     "sinon": "1.17.3",
     "tape": "4.5.1",
-    "watchify": "3.7.0"
+    "watchify": "3.9.0"
   },
   "repository": {
     "type": "git",