diff --git a/README.md b/README.md
index 148c1dc..07e57d7 100644
--- a/README.md
+++ b/README.md
@@ -108,6 +108,7 @@ For cli use these options can be provided in a JSON file named `.minify.json` li
 ```json
 {
     "js": {
+        "mangle": true,
         "mangleClassNames": true,
         "removeUnusedVariables": true,
         "removeConsole": false,