diff --git a/README.md b/README.md
index 09a01b6..00e96ac 100644
--- a/README.md
+++ b/README.md
@@ -130,16 +130,7 @@ module.exports = merge(sharedConfig, ...)
 
 If you need to change your configuration manually:
 
-1. set the public URL used to load `webpack-dev-server` assets
-    ```js
-    {
-      output: {
-        publicPath: 'http://localhost:8080'
-      }
-    }
-    ```
-
-2. add `react-hot-loader/babel` to your `babel-loader` rules:
+1. add `react-hot-loader/babel` to your `babel-loader` rules:
     ```javascript
     {
     module: {
@@ -159,7 +150,7 @@ If you need to change your configuration manually:
     }
     ```
 
-3. prepend `react-hot-loader/patch` to your entries:
+2. prepend `react-hot-loader/patch` to your entries:
     ```javascript
     {
       entry:
@@ -168,7 +159,7 @@ If you need to change your configuration manually:
     }
     ```
 
-4. you now need to use `webpack-dev-server` (in place of `webpack` or `webpack-watcher`). Make sure the following line is in your development.rb:
+3. you now need to use `webpack-dev-server` (in place of `webpack` or `webpack-watcher`). Make sure the following line is in your development.rb:
     ```ruby
     config.x.webpacker[:dev_server_host] = 'http://localhost:8080/'
     ```
@@ -177,7 +168,7 @@ and start `webpack-dev-server` in hot replacement mode:
     ./bin/webpack-dev-server --hot
     ```
 
-5. finally opt in to HMR from your pack files:
+4. finally opt in to HMR from your pack files:
     ```es6
     import SomeRootReactComponent from 'components/some-root-react-component'
     import WebpackerReact from 'webpacker-react/hmr'
@@ -188,6 +179,8 @@ and start `webpack-dev-server` in hot replacement mode:
         WebpackerReact.renderOnHMR(SomeRootReactComponent) )
     ```
 
+You also need to ensure that `output.publicPath` are correctly set. This should be already handled by Webpacker.
+
 ## Development
 
 To work on this gem locally, you first need to clone and setup [the example application](https://github.com/renchap/webpacker-react-example).
diff --git a/javascript/webpacker_react-npm-module/src/configure-hot-module-replacement.js b/javascript/webpacker_react-npm-module/src/configure-hot-module-replacement.js
index 7b3e339..fdb1825 100644
--- a/javascript/webpacker_react-npm-module/src/configure-hot-module-replacement.js
+++ b/javascript/webpacker_react-npm-module/src/configure-hot-module-replacement.js
@@ -2,14 +2,9 @@ import webpack from 'webpack'
 import merge from 'webpack-merge'
 
 function configureHotModuleReplacement(originalConfig) {
-  const webpackDevServerAddr = process.env.WEBPACK_DEV_SERVER_ADDR || 'http://localhost:8080/'
   const config = merge(
     originalConfig,
     {
-      output: {
-        // needed for HMR to know where to load the hot update chunks
-        publicPath: webpackDevServerAddr
-      },
       plugins: [
         new webpack.NamedModulesPlugin()
       ]
diff --git a/javascript/webpacker_react-npm-module/yarn.lock b/javascript/webpacker_react-npm-module/yarn.lock
index 5c41ee9..fcd2490 100644
--- a/javascript/webpacker_react-npm-module/yarn.lock
+++ b/javascript/webpacker_react-npm-module/yarn.lock
@@ -1573,7 +1573,7 @@ lodash.cond@^4.3.0:
   version "4.5.2"
   resolved "https://registry.yarnpkg.com/lodash.cond/-/lodash.cond-4.5.2.tgz#f471a1da486be60f6ab955d17115523dd1d255d5"
 
-lodash@^4.0.0, lodash@^4.2.0, lodash@^4.3.0, "lodash@~> 4":
+lodash@^4.0.0, lodash@^4.2.0, lodash@^4.3.0:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
@@ -2010,13 +2010,7 @@ restore-cursor@^1.0.1:
     exit-hook "^1.0.0"
     onetime "^1.0.0"
 
-rimraf@2, rimraf@^2.2.8:
-  version "2.6.1"
-  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.1.tgz#c2338ec643df7a1b7fe5c54fa86f57428a55f33d"
-  dependencies:
-    glob "^7.0.5"
-
-rimraf@~2.5.1, rimraf@~2.5.4:
+rimraf@2, rimraf@^2.2.8, rimraf@~2.5.1, rimraf@~2.5.4:
   version "2.5.4"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.5.4.tgz#96800093cbf1a0c86bd95b4625467535c29dfa04"
   dependencies: