diff --git a/db/migrate/20190719091918_add_index_for_user_actions.rb b/db/migrate/20190719091918_add_index_for_user_actions.rb
new file mode 100644
index 00000000..43282065
--- /dev/null
+++ b/db/migrate/20190719091918_add_index_for_user_actions.rb
@@ -0,0 +1,8 @@
+class AddIndexForUserActions < ActiveRecord::Migration
+  def up
+    add_index :user_actions, :ip
+  end
+
+  def down
+  end
+end