diff --git a/db/migrate/20161020083353_add_pipeline_id_to_merge_request_metrics.rb b/db/migrate/20161020083353_add_pipeline_id_to_merge_request_metrics.rb
index ed53756cd24dd7c375aa7bf5c049218a5c366e0d..f49df6802a75c348058f4364b59b0481404ca30b 100644
--- a/db/migrate/20161020083353_add_pipeline_id_to_merge_request_metrics.rb
+++ b/db/migrate/20161020083353_add_pipeline_id_to_merge_request_metrics.rb
@@ -4,6 +4,8 @@
 class AddPipelineIdToMergeRequestMetrics < ActiveRecord::Migration
   include Gitlab::Database::MigrationHelpers
 
+  disable_ddl_transaction!
+
   # Set this constant to true if this migration requires downtime.
   DOWNTIME = true