diff --git a/package.json b/package.json
index 764f717..cb24ef9 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "@microsoft/sp-module-interfaces": "1.10.0",
     "@microsoft/sp-webpart-workbench": "1.10.0",
     "@microsoft/rush-stack-compiler-3.3": "0.3.5",
-    "gulp": "~3.9.1",
+    "gulp": "~4.0.2",
     "@types/chai": "3.4.34",
     "@types/mocha": "2.2.38",
     "ajv": "~5.2.2"