diff --git a/Debian-Upgrade.md b/Debian-Upgrade.md
index f172590..1c690cb 100644
--- a/Debian-Upgrade.md
+++ b/Debian-Upgrade.md
@@ -11,7 +11,7 @@ apt-get full-upgrade
 
 apt-get autoremove --purge
 dpkg -l | grep -v ^ii
-aptitude search "?installed?not(?narrow(?installed,?origin(^Debian$)?archive(^stable)))"
+apt list '?narrow(?installed, ?not(?origin(Debian)))'
 apt-mark showmanual
 ```