diff --git a/source/4/Installing_Updating_and_Removing_Software.rst b/source/4/Installing_Updating_and_Removing_Software.rst
index 0442312f..e8ad36a3 100644
--- a/source/4/Installing_Updating_and_Removing_Software.rst
+++ b/source/4/Installing_Updating_and_Removing_Software.rst
@@ -1,7 +1,7 @@
 Chapter 4 Installing Updating and Removing Software
 ===================================================
 
-This chapter will teach you how to use GUI to install update and remove software.
+This chapter will teach you how to use GUI to install update and remove software and manage sources. 
 
 .. toctree::
   :maxdepth: 2