diff --git a/db/post_migrate/20170502070007_enable_auto_cancel_pending_pipelines_for_all.rb b/db/post_migrate/20170502070007_enable_auto_cancel_pending_pipelines_for_all.rb
index 0abc75a3ed65623f40c6f39e9f7699bf9a1efde2..a19b73fc114b6cb94aec7b9b8422a09e0446a0ba 100644
--- a/db/post_migrate/20170502070007_enable_auto_cancel_pending_pipelines_for_all.rb
+++ b/db/post_migrate/20170502070007_enable_auto_cancel_pending_pipelines_for_all.rb
@@ -1,6 +1,8 @@
 class EnableAutoCancelPendingPipelinesForAll < ActiveRecord::Migration
   include Gitlab::Database::MigrationHelpers
 
+  disable_ddl_transaction!
+
   DOWNTIME = false
 
   def up