diff --git a/sections/javascript/editorconfig.md b/sections/javascript/editorconfig.md
index 0a656f1..991e434 100644
--- a/sections/javascript/editorconfig.md
+++ b/sections/javascript/editorconfig.md
@@ -5,6 +5,6 @@ See [.editorconfig](../editorconfig.md) base rules.
 Use these rules:
 
 ```editorconfig
-[*.{js,jsx,ts,tsx}]
+[*.{js,jsx,mjs,ts,tsx}]
 indent_style = tab
 ```