diff --git a/db/migrate/20180514142421_rename_switchman_shards_fk_if_necessary.rb b/db/migrate/20180514142421_rename_switchman_shards_fk_if_necessary.rb
new file mode 100644
index 00000000000..712e277190e
--- /dev/null
+++ b/db/migrate/20180514142421_rename_switchman_shards_fk_if_necessary.rb
@@ -0,0 +1,13 @@
+class RenameSwitchmanShardsFkIfNecessary < ActiveRecord::Migration[5.1]
+  tag :predeploy
+
+  def up
+    if connection.send(:postgresql_version) >= 90400
+      alter_constraint(:switchman_shards, find_foreign_key(:switchman_shards, :switchman_shards, column: :delayed_jobs_shard_id), new_name: 'fk_rails_45bd80a9c8')
+    else
+      remove_foreign_key_if_exists :switchman_shards, :switchman_shards, column: :delayed_jobs_shard_id
+      add_foreign_key :switchman_shards, :switchman_shards, column: :delayed_jobs_shard_id
+    end
+
+  end
+end