diff --git a/packages/react-json-tree/examples/webpack.config.js b/packages/react-json-tree/examples/webpack.config.js
index 6c27baee..3d7b894f 100755
--- a/packages/react-json-tree/examples/webpack.config.js
+++ b/packages/react-json-tree/examples/webpack.config.js
@@ -5,7 +5,7 @@ var isProduction = process.env.NODE_ENV === 'production';
 
 module.exports = {
   mode: isProduction ? 'production' : 'development',
-  devtool: 'source-map',
+  devtool: 'eval-source-map',
   entry: [
     !isProduction && 'webpack-dev-server/client?http://localhost:3000',
     !isProduction && 'webpack/hot/only-dev-server',
diff --git a/packages/redux-devtools-core/webpack.config.js b/packages/redux-devtools-core/webpack.config.js
index 6c7b5fc3..c50363b3 100644
--- a/packages/redux-devtools-core/webpack.config.js
+++ b/packages/redux-devtools-core/webpack.config.js
@@ -81,5 +81,5 @@ module.exports = (env = {}) => ({
   devServer: {
     port: 3000
   },
-  devtool: env.development ? 'eval' : 'source-map'
+  devtool: env.development ? 'eval-source-map' : 'source-map'
 });
diff --git a/packages/redux-devtools-inspector/webpack.config.js b/packages/redux-devtools-inspector/webpack.config.js
index 8dd583e9..0ceb322e 100644
--- a/packages/redux-devtools-inspector/webpack.config.js
+++ b/packages/redux-devtools-inspector/webpack.config.js
@@ -10,7 +10,7 @@ var isProduction = process.env.NODE_ENV === 'production';
 
 module.exports = {
   mode: process.env.NODE_ENV || 'development',
-  devtool: 'eval',
+  devtool: 'eval-source-map',
   entry: isProduction
     ? ['./demo/src/js/index']
     : [
diff --git a/packages/redux-devtools-test-generator/webpack.config.js b/packages/redux-devtools-test-generator/webpack.config.js
index 49e9bbec..b8a791c7 100644
--- a/packages/redux-devtools-test-generator/webpack.config.js
+++ b/packages/redux-devtools-test-generator/webpack.config.js
@@ -3,14 +3,13 @@ const webpack = require('webpack');
 const HtmlWebpackPlugin = require('html-webpack-plugin');
 const CleanWebpackPlugin = require('clean-webpack-plugin');
 const ExportFilesWebpackPlugin = require('export-files-webpack-plugin');
-const NyanProgressWebpackPlugin = require('nyan-progress-webpack-plugin');
 
 const pkg = require('./package.json');
 
 const isProduction = process.env.NODE_ENV === 'production';
 
 module.exports = {
-  devtool: 'eval',
+  devtool: 'eval-source-map',
   entry: isProduction
     ? ['./demo/src/js/index']
     : [
@@ -34,8 +33,7 @@ module.exports = {
       'process.env': {
         NODE_ENV: JSON.stringify(process.env.NODE_ENV)
       }
-    }),
-    new NyanProgressWebpackPlugin()
+    })
   ].concat(
     isProduction
       ? [
diff --git a/packages/redux-slider-monitor/examples/todomvc/webpack.config.js b/packages/redux-slider-monitor/examples/todomvc/webpack.config.js
index ca59ce0b..9115bb54 100755
--- a/packages/redux-slider-monitor/examples/todomvc/webpack.config.js
+++ b/packages/redux-slider-monitor/examples/todomvc/webpack.config.js
@@ -2,7 +2,7 @@ const path = require('path');
 const webpack = require('webpack');
 
 module.exports = {
-  devtool: 'eval-cheap-module-source-map',
+  devtool: 'eval-source-map',
   devServer: {
     contentBase: path.join(__dirname, 'dist'),
     host: 'localhost',