diff --git a/samples/react-css-in-js-typestyle/package-lock.json b/samples/react-css-in-js-typestyle/package-lock.json
index e86cecf56..938618a79 100644
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diff --git a/samples/react-css-in-js-typestyle/package.json b/samples/react-css-in-js-typestyle/package.json
index 406bd91ed..4d5025117 100644
--- a/samples/react-css-in-js-typestyle/package.json
+++ b/samples/react-css-in-js-typestyle/package.json
@@ -35,7 +35,7 @@
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-    "gulp": "~3.9.1",
+    "gulp": "~4.0.2",
     "@types/chai": "3.4.34",
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     "ajv": "~5.2.2"