diff --git a/test/dependency-a/dependency-a.el b/test/dependency-a/dependency-a.el
index 2dd0956..58e958f 100644
--- a/test/dependency-a/dependency-a.el
+++ b/test/dependency-a/dependency-a.el
@@ -1,4 +1,4 @@
-;;; dependency-a.el --- Dependency test package A
+;;; dependency-a.el --- Dependency test package A  -*- lexical-binding: t -*-
 
 ;; Version: 1.0.99