diff --git a/webpack.config.js b/webpack.config.js
index f557496..553da87 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -74,7 +74,7 @@ const config = {
     }),
     new CopyWebpackPlugin([
       { from: 'res', to: 'res'},
-      { from: 'ext', to: 'ext'},
+      { from: 'ext', to: 'ext', ignore: ['conf/*', 'lib/**']},
       { from: 'icons', to: 'icons', ignore: ['icon.xcf'] },
       { from: 'popup/popup.html', to: 'popup/popup.html', transform: transformHtml },
       { from: 'options/options.html', to: 'options/options.html', transform: transformHtml },