diff --git a/scripts/build b/scripts/build
index ae0f6d1c..754e416e 100755
--- a/scripts/build
+++ b/scripts/build
@@ -1,2 +1,2 @@
 #!/bin/sh
-webpack --config webpack.dist.config.js
\ No newline at end of file
+webpack --config webpack.dist.config.js -p
diff --git a/webpack.dist.config.js b/webpack.dist.config.js
index 4ac98798..953695e7 100644
--- a/webpack.dist.config.js
+++ b/webpack.dist.config.js
@@ -9,6 +9,11 @@ module.exports = {
     'react-modal.min': './lib/index.js'
   },
 
+  externals: [
+    'react',
+    'react-dom'
+  ],
+
   output: {
     filename: '[name].js',
     chunkFilename: '[id].chunk.js',
@@ -37,4 +42,4 @@ module.exports = {
     ]
   }
 
-};
\ No newline at end of file
+};