diff --git a/package.json b/package.json
index 64f245d..b19d4a5 100644
--- a/package.json
+++ b/package.json
@@ -80,8 +80,8 @@
     "sass-loader": "^7.1.0",
     "url-loader": "^2.2.0",
     "wct-mocha": "^1.0.0",
-    "webpack": "^4.10.2",
-    "webpack-cli": "^3.1.2",
+    "webpack": "^5.1.1",
+    "webpack-cli": "^4.0.0",
     "webpack-dev-server": "^3.1.4",
     "workbox-webpack-plugin": "^3.6.3",
     "xo": "^0.24.0"