diff -pruN 1.12-4.2/debian/changelog 1.12-4.2ubuntu1/debian/changelog
--- 1.12-4.2/debian/changelog	2021-06-23 12:55:39.000000000 +0000
+++ 1.12-4.2ubuntu1/debian/changelog	2021-08-19 14:43:47.000000000 +0000
@@ -1,3 +1,10 @@
+redshift (1.12-4.2ubuntu1) impish; urgency=medium
+
+  * d/rules: pass --without-systemduserunitdir to configure to avoid the
+    creation/installation of systemd service files (LP: #1940465).
+
+ -- Lucas Kanashiro <kanashiro@ubuntu.com>  Thu, 19 Aug 2021 11:43:47 -0300
+
 redshift (1.12-4.2) unstable; urgency=medium
 
   * Non-maintainer upload.
diff -pruN 1.12-4.2/debian/control 1.12-4.2ubuntu1/debian/control
--- 1.12-4.2/debian/control	2020-12-12 16:43:43.000000000 +0000
+++ 1.12-4.2ubuntu1/debian/control	2021-08-19 14:43:47.000000000 +0000
@@ -1,7 +1,8 @@
 Source: redshift
 Section: x11
 Priority: optional
-Maintainer: nicoo <nicoo@debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: nicoo <nicoo@debian.org>
 Build-Depends:
  debhelper-compat (= 13),
  dh-apparmor,
diff -pruN 1.12-4.2/debian/rules 1.12-4.2ubuntu1/debian/rules
--- 1.12-4.2/debian/rules	2021-06-23 12:54:20.000000000 +0000
+++ 1.12-4.2ubuntu1/debian/rules	2021-08-19 14:43:47.000000000 +0000
@@ -11,7 +11,10 @@ include /usr/share/dpkg/buildflags.mk
 
 override_dh_auto_configure:
 	intltoolize --force
+	# Disable the creation/installation of systemd service files.
+	# See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892275
 	dh_auto_configure -- \
+		--without-systemduserunitdir \
 		--enable-randr --enable-vidmode \
 		--enable-geoclue2 --disable-geoclue \
 		--enable-ubuntu --enable-apparmor