diff --git a/db/migrate/20200529115011_add_foreign_key_constraint_to_active_storage_attachments_for_blob_id.active_storage.rb b/db/migrate/20200529115011_add_foreign_key_constraint_to_active_storage_attachments_for_blob_id.active_storage.rb
new file mode 100644
index 000000000..ff5d72c7e
--- /dev/null
+++ b/db/migrate/20200529115011_add_foreign_key_constraint_to_active_storage_attachments_for_blob_id.active_storage.rb
@@ -0,0 +1,10 @@
+# This migration comes from active_storage (originally 20180723000244)
+class AddForeignKeyConstraintToActiveStorageAttachmentsForBlobId < ActiveRecord::Migration[6.0]
+  def up
+    return if foreign_key_exists?(:active_storage_attachments, column: :blob_id)
+
+    if table_exists?(:active_storage_blobs)
+      add_foreign_key :active_storage_attachments, :active_storage_blobs, column: :blob_id
+    end
+  end
+end