diff --git a/package.json b/package.json
index ebffd21..9419d73 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "webpack-defaults": "^1.6.0"
   },
   "peerDependencies": {
-    "webpack": "^2.0.0 || ^3.0.0"
+    "webpack": "^2.0.0 || ^3.0.0 || ^4.0.0"
   },
   "engines": {
     "node": ">= 4.8 < 5.0.0 || >= 5.10"