diff --git a/package.json b/package.json
index 2267237..6c20cac 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "devDependencies": {
     "better-assert": "1.0.2",
     "coveralls": "^2.11.15",
-    "gulp": "3.9.1",
+    "gulp": "4.0.0",
     "gulp-header": "1.8.8",
     "gulp-rename": "1.2.2",
     "gulp-replace": "0.5.4",