diff --git a/packages/gatsby-plugin-less/package.json b/packages/gatsby-plugin-less/package.json
index ee026832ff3b0..e4ddb62107d42 100644
--- a/packages/gatsby-plugin-less/package.json
+++ b/packages/gatsby-plugin-less/package.json
@@ -15,7 +15,7 @@
     "gatsby-1-config-css-modules": "^1.0.11",
     "less": "^2.7.2",
     "less-loader": "^3.0.0",
-    "webpack": "^1.13.3"
+    "webpack": "^4.0.0"
   },
   "devDependencies": {
     "babel-cli": "^6.26.0",