diff --git a/absl/app.py b/absl/app.py
index d12397b..cb9b7eb 100644
--- a/absl/app.py
+++ b/absl/app.py
@@ -25,6 +25,8 @@
       app.run(main)
 """
 
+# Dummy change for internal testing.
+
 import collections
 import errno
 import os