diff --git a/runtime/ftplugin/debchangelog.vim b/runtime/ftplugin/debchangelog.vim
index dca7f73..aa657a9 100644
--- a/runtime/ftplugin/debchangelog.vim
+++ b/runtime/ftplugin/debchangelog.vim
@@ -3,7 +3,7 @@
 " Maintainer:   Debian Vim Maintainers <team+vim@tracker.debian.org>
 " Former Maintainers:   Michael Piefel <piefel@informatik.hu-berlin.de>
 "                       Stefano Zacchiroli <zack@debian.org>
-" Last Change:  2023 Jan 16
+" Last Change:  2023 Aug 18
 " License:      Vim License
 " URL:          https://salsa.debian.org/vim-team/vim-debian/blob/main/ftplugin/debchangelog.vim
 
diff --git a/runtime/ftplugin/debsources.vim b/runtime/ftplugin/debsources.vim
new file mode 100644
index 0000000..cbb4faf
--- /dev/null
+++ b/runtime/ftplugin/debsources.vim
@@ -0,0 +1,16 @@
+" Language:     Debian sources.list
+" Maintainer:   Debian Vim Maintainers <team+vim@tracker.debian.org>
+" Last Change:  2023 Aug 30
+" License:      Vim License
+" URL:          https://salsa.debian.org/vim-team/vim-debian/blob/main/ftplugin/debsources.vim
+
+if exists('b:did_ftplugin')
+  finish
+endif
+let b:did_ftplugin=1
+
+setlocal comments=:#
+setlocal commentstring=#%s
+setlocal formatoptions-=t
+
+let b:undo_ftplugin = 'setlocal comments< commentstring< formatoptions<'