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-rw-r--r--db/migrate/20161209153400_add_unique_index_for_environment_slug.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/db/migrate/20161209153400_add_unique_index_for_environment_slug.rb b/db/migrate/20161209153400_add_unique_index_for_environment_slug.rb
index 42a90091b87..57606a33cb9 100644
--- a/db/migrate/20161209153400_add_unique_index_for_environment_slug.rb
+++ b/db/migrate/20161209153400_add_unique_index_for_environment_slug.rb
@@ -2,7 +2,7 @@
# for more information on how to write migrations for GitLab.
# rubocop:disable RemoveIndex
-class AddUniqueIndexForEnvironmentSlug < ActiveRecord::Migration
+class AddUniqueIndexForEnvironmentSlug < ActiveRecord::Migration[4.2]
include Gitlab::Database::MigrationHelpers
DOWNTIME = true