diff --git a/library/Theme/FileUploads.php b/library/Theme/FileUploads.php
index <HASH>..<HASH> 100644
--- a/library/Theme/FileUploads.php
+++ b/library/Theme/FileUploads.php
@@ -44,6 +44,10 @@ class FileUploads
      */
     public function mimeTypes($mimes)
     {
+        // Archives
+        $mimes['zip'] = 'application/zip';
+        $mimes['gz'] = 'application/x-gzip';
+
         // Images
         $mimes['ico'] = 'image/x-icon';
Allow archive (zip, gzip) in file upload