diff --git a/apps/dashboard/config/environment.rb b/apps/dashboard/config/environment.rb
index 426333bb46..d5abe55806 100644
--- a/apps/dashboard/config/environment.rb
+++ b/apps/dashboard/config/environment.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Load the Rails application.
 require_relative 'application'