diff --git a/css/css-rhythm-1/tools/generators/package.json b/css/css-rhythm-1/tools/generators/package.json
index 93f5c1347a49cf..df41085c1310ea 100644
--- a/css/css-rhythm-1/tools/generators/package.json
+++ b/css/css-rhythm-1/tools/generators/package.json
@@ -11,7 +11,7 @@
   "devDependencies": {
     "browser-sync": "^2.11.1",
     "ejs": "^2.4.1",
-    "gulp": "^3.9.1",
+    "gulp": "^4.0.0",
     "gulp-ejs": "^2.1.1",
     "gulp-rename": "^1.2.2"
   }