diff --git a/CHANGELOG.md b/CHANGELOG.md
index 675306d06..71fc96d78 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 ## Changelog
 
+## 3.8.18
+
+- Feat: breaking change for `@builder/rax-pack` to update `postcss-loader`
+- Feat: breaking change for `rax-webpack-config` to update `postcss-loader`
+
 ## 3.8.17
 
 - Revert: compat of postcss-loader options in build-plugin-rax-app
@@ -93,7 +98,7 @@ SSR: fix chunkInfo is undefined FaaS app
 SSR: fix request might be fake that lose url field
 SSR: fix devServer.hot should be closed
 SSR: fix appConfig might be undefined
-Fix: __webpack_public_path__ is invalid in front of page file
+Fix: `__webpack_public_path__` is invalid in front of page file
 Fix: tabBar show in other page
 Fix: child class need use declare with add type for property which extends parent
 Fix: miniapp compile mode @alias is invalid
@@ -116,7 +121,7 @@ Chore: use webpack-chain directly
         "path": "/",
         "source": "pages/Home/index",
         "keepAlive": true,
-        "lazy": false,
+        "lazy": false
       }
     ]
   }
diff --git a/packages/plugin-rax-app/CHANGELOG.md b/packages/plugin-rax-app/CHANGELOG.md
index 6d29123b2..b2ec0e32b 100644
--- a/packages/plugin-rax-app/CHANGELOG.md
+++ b/packages/plugin-rax-app/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 7.0.12
+
+- Feat: breaking change for `rax-webpack-config` to update `postcss-loader`
+
 ## 7.0.11
 
 - Revert: compat of `postcs-loader` options
diff --git a/packages/plugin-rax-app/package.json b/packages/plugin-rax-app/package.json
index 18a72e437..f027c98e7 100644
--- a/packages/plugin-rax-app/package.json
+++ b/packages/plugin-rax-app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "build-plugin-rax-app",
-  "version": "7.0.11",
+  "version": "7.0.12",
   "description": "The basic webpack configuration for rax project",
   "author": "Rax Team",
   "main": "lib/index.js",
@@ -18,7 +18,7 @@
   ],
   "license": "MIT",
   "dependencies": {
-    "rax-webpack-config": "^3.0.0",
+    "rax-webpack-config": "^4.0.0",
     "rax-babel-config": "^2.0.2",
     "rax-jest-config": "^1.1.0",
     "rax-platform-loader": "^1.1.1",
diff --git a/packages/plugin-rax-app/src/userConfig/atoms/inlineStyle.js b/packages/plugin-rax-app/src/userConfig/atoms/inlineStyle.js
index e13f92472..cedffef9a 100644
--- a/packages/plugin-rax-app/src/userConfig/atoms/inlineStyle.js
+++ b/packages/plugin-rax-app/src/userConfig/atoms/inlineStyle.js
@@ -124,12 +124,6 @@ function configPostCssLoader(configRule, type) {
   return configRule
     .use('postcss-loader')
     .tap((options) => {
-      if (isWebpack4) {
-        return {
-          ...options,
-          plugins: (options.plugins || []).concat(getPostCssPlugin(type)),
-        };
-      }
       const postcssOptions = options.postcssOptions || {};
       return {
         ...options,
diff --git a/packages/rax-app/package.json b/packages/rax-app/package.json
index cb8fa2aaf..dd07b36b0 100644
--- a/packages/rax-app/package.json
+++ b/packages/rax-app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rax-app",
-  "version": "3.8.17",
+  "version": "3.8.18",
   "description": "command line interface and builtin plugin for rax app",
   "author": "Rax Team",
   "homepage": "https://github.com/raxjs/rax-app#readme",
@@ -18,7 +18,7 @@
     "build-scripts": "^1.1.0",
     "build-plugin-app-core": "2.1.0",
     "build-plugin-ice-config": "2.0.2",
-    "build-plugin-rax-app": "7.0.11",
+    "build-plugin-rax-app": "7.0.12",
     "build-plugin-rax-kraken": "2.1.1",
     "build-plugin-rax-miniapp": "2.0.2",
     "build-plugin-rax-pha": "2.1.1",
diff --git a/packages/rax-webpack-config/CHANELOG.md b/packages/rax-webpack-config/CHANELOG.md
index 048f4b44a..10e2b2c62 100644
--- a/packages/rax-webpack-config/CHANELOG.md
+++ b/packages/rax-webpack-config/CHANELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v4.0.0
+
+- Feat: breaking change for `@builder/rax-pack` to update `postcss-loader`
+
 ## v3.0.6
 
 - Revert: version of @builder/rax-pack
diff --git a/packages/rax-webpack-config/package.json b/packages/rax-webpack-config/package.json
index 625fca26d..472700561 100644
--- a/packages/rax-webpack-config/package.json
+++ b/packages/rax-webpack-config/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rax-webpack-config",
-  "version": "3.0.6",
+  "version": "4.0.0",
   "description": "rax base webpack config",
   "license": "BSD-3-Clause",
   "main": "lib/index.js",
@@ -18,7 +18,7 @@
   "homepage": "https://github.com/raxjs/rax-app/tree/master/packages/rax-webpack-config#readme",
   "dependencies": {
     "@builder/pack": "^0.6.0",
-    "@builder/rax-pack": "^0.1.0",
+    "@builder/rax-pack": "^1.0.0",
     "@babel/runtime": "^7.2.0",
     "babel-runtime-jsx-plus": "^0.1.3",
     "less": "^4.0.0",