diff --git a/config/initializers/active_storage.rb b/config/initializers/active_storage.rb
index cf53f7918..a246e62ac 100644
--- a/config/initializers/active_storage.rb
+++ b/config/initializers/active_storage.rb
@@ -1,4 +1,5 @@
 Rails.application.config.active_storage.queue = :storage
+Rails.application.config.active_storage.variable_content_types << "image/bmp"
 
 Rails.configuration.after_initialize do
   require "active_storage/service/s3_service"