diff --git a/models/site.rb b/models/site.rb
index 82e1ea3c..cfe97bc0 100644
--- a/models/site.rb
+++ b/models/site.rb
@@ -37,6 +37,7 @@ class Site < Sequel::Model
     image/x-xcf
     application/epub+zip
     message/rfc822
+    application/font-sfnt
   }
 
   VALID_EXTENSIONS = %w{