diff -u quickml-0.7/debian/changelog quickml-0.7/debian/changelog
--- quickml-0.7/debian/changelog
+++ quickml-0.7/debian/changelog
@@ -1,3 +1,11 @@
+quickml (0.7-5.1ubuntu0.1) focal; urgency=medium
+
+  * Fix quickml failure to install. (LP: #1921914)
+    - d/control: Add runtime dependency on ruby-thwait.
+    - d/postinst: Create /etc/mailname if it does not exist.
+
+ -- Sudip Mukherjee <sudipm.mukherjee@gmail.com>  Sun, 12 May 2024 17:12:45 +0100
+
 quickml (0.7-5.1) unstable; urgency=medium
 
   * Non-maintainer upload with maintainer approval.
diff -u quickml-0.7/debian/control quickml-0.7/debian/control
--- quickml-0.7/debian/control
+++ quickml-0.7/debian/control
@@ -1,14 +1,15 @@
 Source: quickml
 Section: mail
 Priority: optional
-Maintainer: Kenshi Muto <kmuto@debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Kenshi Muto <kmuto@debian.org>
 Build-Depends: debhelper (>> 9)
 Build-Depends-Indep: ruby, ruby-dev
 Standards-Version: 3.8.0
 
 Package: quickml
 Architecture: all
-Depends: ruby | ruby-interpreter, ${misc:Depends}
+Depends: ruby | ruby-interpreter, ruby-thwait, ${misc:Depends}
 Description: Very-easy-to-use mailing list system
  quickml server is a very-easy-to-use mailing list system.
  quickml server provides very-easy-to-use mailing list service.
diff -u quickml-0.7/debian/postinst quickml-0.7/debian/postinst
--- quickml-0.7/debian/postinst
+++ quickml-0.7/debian/postinst
@@ -26,6 +26,9 @@
 case "$1" in
     configure)
 	chown list:list /var/lib/quickml /var/log/quickml
+	if [ ! -e /etc/mailname ]; then
+		touch /etc/mailname
+	fi
     ;;
 
     abort-upgrade|abort-remove|abort-deconfigure)