diff --git a/lib/src/mime_type_resolver.dart b/lib/src/mime_type_resolver.dart
index a01fe4b1..baf008c7 100644
--- a/lib/src/mime_type_resolver.dart
+++ b/lib/src/mime_type_resolver.dart
@@ -895,6 +895,7 @@ class MimeTypeResolver {
     "csv": "text/csv",
     "html": "text/html",
     "htm": "text/html",
+    "mjs": "text/javascript",
     "n3": "text/n3",
     "txt": "text/plain",
     "text": "text/plain",