diff --git a/package.json b/package.json
index 4c347d38d..f1a758cb1 100644
--- a/package.json
+++ b/package.json
@@ -100,7 +100,7 @@
     "@webpack-blocks/css-modules": "^0.4.0",
     "@webpack-blocks/dev-server2": "^0.4.0",
     "@webpack-blocks/extract-text2": "^0.4.0",
-    "@webpack-blocks/postcss": "^0.4.3",
+    "@webpack-blocks/postcss": "^2.0.0",
     "@webpack-blocks/webpack2": "^0.4.0",
     "autoprefixer": "^7.1.0",
     "babel-loader": "^7.0.0",
@@ -122,7 +122,7 @@
     "file-loader": "^0.11.1",
     "fs.promised": "^3.0.0",
     "html-webpack-exclude-assets-plugin": "0.0.5",
-    "html-webpack-plugin": "^2.28.0",
+    "html-webpack-plugin": "^5.5.0",
     "ip": "^1.1.5",
     "isomorphic-unfetch": "^2.0.0",
     "json-loader": "^0.5.4",
@@ -134,7 +134,7 @@
     "offline-plugin": "^4.6.2",
     "ora": "^1.2.0",
     "persist-path": "^1.0.1",
-    "postcss-less": "^0.16.1",
+    "postcss-less": "^3.0.0",
     "preact": "^8.1.0",
     "preact-compat": "^3.14.3",
     "preact-render-to-string": "^3.6.0",
@@ -151,10 +151,10 @@
     "tmp": "0.0.31",
     "unfetch": "^3.0.0",
     "url-loader": "^0.5.8",
-    "webpack": "^2.3.3",
-    "webpack-dev-server": "^2.4.5",
+    "webpack": "^4.0.0",
+    "webpack-dev-server": "^4.0.0",
     "webpack-plugin-replace": "^1.1.1",
     "which": "^1.2.14",
-    "yargs": "^8.0.1"
+    "yargs": "^13.2.4"
   }
 }