diff --git a/app/models/media_attachment.rb b/app/models/media_attachment.rb
index 65f00e1c8..70a671b4a 100644
--- a/app/models/media_attachment.rb
+++ b/app/models/media_attachment.rb
@@ -101,8 +101,8 @@ class MediaAttachment < ApplicationRecord
     },
   }.freeze
 
-  IMAGE_LIMIT = 8.megabytes
-  VIDEO_LIMIT = 40.megabytes
+  IMAGE_LIMIT = (ENV['MAX_IMAGE_SIZE'] || 8.megabytes).to_i
+  VIDEO_LIMIT = (ENV['MAX_VIDEO_SIZE'] || 40.megabytes).to_i
 
   belongs_to :account,          inverse_of: :media_attachments, optional: true
   belongs_to :status,           inverse_of: :media_attachments, optional: true