--- orig/preseed/elho-base.cfg
+++ mod/preseed/elho-base.cfg
@@ -7,6 +7,8 @@
 apt-listchanges	apt-listchanges/confirm		boolean true
 # Method to be used to display changes:
 apt-listchanges	apt-listchanges/frontend	select pager
+# Disable retrieving changes over network?
+apt-listchanges apt-listchanges/no-network	boolean false
 # Should apt-listchanges skip changes that have already been seen?
 apt-listchanges	apt-listchanges/save-seen	boolean true
 # Changes displayed with apt:
@@ -29,7 +31,7 @@
 debconf	debconf/priority	select medium
 
 # Main suite from which packages are installed:
-debsecan	debsecan/suite	select stretch
+debsecan	debsecan/suite	select buster
 
 # Should debsum files be automatically generated by apt-get?
 debsums	debsums/apt-autogen	boolean false
