diff --git a/db/migrate/20180612102327_change_submission_source_size.rb b/db/migrate/20180612102327_change_submission_source_size.rb
new file mode 100644
--- /dev/null
+++ b/db/migrate/20180612102327_change_submission_source_size.rb
@@ -0,0 +1,5 @@
+class ChangeSubmissionSourceSize < ActiveRecord::Migration
+  def change
+    change_column :submissions, :source, :text, :limit => 1.megabyte
+  end
+end