diff --git a/db/migrate/20201021041202_add_index_for_updated_on_to_projects.rb b/db/migrate/20201021041202_add_index_for_updated_on_to_projects.rb
new file mode 100644
index 000000000..43c223a6b
--- /dev/null
+++ b/db/migrate/20201021041202_add_index_for_updated_on_to_projects.rb
@@ -0,0 +1,5 @@
+class AddIndexForUpdatedOnToProjects < ActiveRecord::Migration[5.2]
+  def change
+    add_index :projects, :updated_on
+  end
+end