diff --git a/packages/react-scripts/config/customizers.js b/packages/react-scripts/config/customizers.js
index ef8c689ccc..ad2a2355a0 100644
--- a/packages/react-scripts/config/customizers.js
+++ b/packages/react-scripts/config/customizers.js
@@ -17,13 +17,13 @@ module.exports = {
     toArray: 'loaders',
     getDev: function () {
       return {
-        test: /\.scss$/,
+        test: /(\.scss|\.sass)$/,
         loader: "style!css!postcss!sass"
       }
     },
     getProd: function () {
       return {
-        test: /\.scss$/,
+        test: /(\.scss|\.sass)$/,
         loader: ExtractTextPlugin.extract('style', 'css!postcss!sass')
       }
     }
@@ -49,4 +49,4 @@ module.exports = {
       prod: 'style!css?modules&-autoprefixer&importLoaders=1!postcss'
     }
   }
-}
\ No newline at end of file
+}