diff --git a/config/application.rb b/config/application.rb
index 85ebe5db0..ae6375365 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -16,7 +16,7 @@ Bundler.require(*Rails.groups)
 
 begin
   require_relative "danbooru_default_config"
-  require_relative "danbooru_local_config"
+  require_relative ENV.fetch("DANBOORU_CONFIG_FILE", "danbooru_local_config")
 rescue LoadError
 end