diff --git a/files/config/mime.types b/files/config/mime.types
index 89be9a4..176b6c5 100644
--- a/files/config/mime.types
+++ b/files/config/mime.types
@@ -5,7 +5,7 @@ types {
     text/xml                              xml;
     image/gif                             gif;
     image/jpeg                            jpeg jpg;
-    application/javascript                js;
+    application/javascript                js mjs;
     application/atom+xml                  atom;
     application/rss+xml                   rss;