diff --git a/models/site.rb b/models/site.rb
index ec048757..6202c4a0 100644
--- a/models/site.rb
+++ b/models/site.rb
@@ -34,7 +34,7 @@ class Site < Sequel::Model
   }
 
   VALID_EXTENSIONS = %w{
-    html htm txt text css js jpg jpeg png gif svg md markdown eot ttf woff woff2 json geojson csv tsv mf ico pdf asc key pgp xml mid midi manifest otf webapp less sass rss
+    html htm txt text css js jpg jpeg png gif svg md markdown eot ttf woff woff2 json geojson csv tsv mf ico pdf asc key pgp xml mid midi manifest otf webapp less sass rss kml
   }
 
   VALID_EDITABLE_EXTENSIONS = %w{