diff --git a/lib/index.js b/lib/index.js
index 3ca9d1e9e..990c86235 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -93,7 +93,7 @@ module.exports = function (source) {
 
   const id = hash(
     isProduction
-      ? (shortFilePath + '\n' + source)
+      ? (shortFilePath + '\n' + source.replace(/\r\n/g, '\n'))
       : shortFilePath
   )