diff --git a/config/site_settings.yml b/config/site_settings.yml
index a7e30e2683..0b188b566f 100644
--- a/config/site_settings.yml
+++ b/config/site_settings.yml
@@ -708,9 +708,11 @@ files:
   max_image_size_kb:
     client: true
     default: 3072
+    max: 100000
   max_attachment_size_kb:
     client: true
     default: 3072
+    max: 1024000
   max_image_megapixels:
     default: 40
     min: 5