diff --git a/webpack.config.js b/webpack.config.js
index 18d6a1b..6da1261 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -6,6 +6,9 @@ module.exports = {
     path: path.resolve(__dirname, 'dist'),
     libraryTarget: 'umd',
     library: 'feather',
+    // Prevents webpack from referencing `window` in the UMD build
+    // Source: https://git.io/vppgU
+    globalObject: 'typeof self !== \'undefined\' ? self : this',
   },
   devtool: 'source-map',
   module: {