diff --git a/debian/apertis/copyright b/debian/apertis/copyright
index 53ed0c26324fb332f3f0dcb1f1ea756eb87f6e75..028b675ee8bd259f09567fb78870a9f2288c0dae 100644
--- a/debian/apertis/copyright
+++ b/debian/apertis/copyright
@@ -9,7 +9,9 @@ Copyright: interest in the
 License: Unlicense
 
 Files: debian/*
-Copyright: no-info-found
+Copyright: 2010-2013 Tollef Fog Heen <tfheen@debian.org>
+           2013-2018 Michael Biebl <biebl@debian.org>
+           2013 Michael Stapelberg <stapelberg@debian.org>
 License: LGPL-2.1+
 
 Files: debian/extra/systemd.py
@@ -18,7 +20,9 @@ Copyright: 2009, 2014-2016, Canonical Ltd.
 License: LGPL-2.1+
 
 Files: debian/extra/tmpfiles.d/*
-Copyright: no-info-found
+Copyright: 2010-2013 Tollef Fog Heen <tfheen@debian.org>
+           2013-2018 Michael Biebl <biebl@debian.org>
+           2013 Michael Stapelberg <stapelberg@debian.org>
 License: GPL-2+
 
 Files: debian/lib.systemd.systemd-logind
@@ -110,7 +114,8 @@ Copyright: 2012, Josh Triplett <josh@joshtriplett.org>
 License: Expat
 
 Files: src/basic/utf8.c
-Copyright: no-info-found
+Copyright: 2000, Red Hat, Inc.
+ 1999, Tom Tromey
 License: LGPL-2+
 
 Files: src/boot/efi/sha256.c
@@ -145,7 +150,8 @@ Copyright: 1995-2004, Miquel van Smoorenburg
 License: LGPL-2+
 
 Files: src/shared/linux/*
-Copyright: no-info-found
+Copyright: 2008, Red Hat, Inc.
+ 2008, Ian Kent <raven@themaw.net>
 License: GPL-2
 
 Files: src/shared/linux/bpf.h
@@ -153,11 +159,20 @@ Copyright: 2011-2014, PLUMgrid, http:plumgrid.com
 License: GPL-2
 
 Files: src/shared/linux/dm-ioctl.h
-Copyright: no-info-found
+Copyright: 2004-2009, Red Hat, Inc.
+ 2001-2003, Sistina Software (UK) Limited.
 License: LGPL
 
 Files: src/shared/linux/nl80211.h
-Copyright: no-info-found
+Copyright: 2018, 2019, Intel Corporation
+ 2015-2017, Intel Deutschland GmbH
+ 2008, Michael Wu <flamingice@sourmilk.net>
+ 2008, Michael Buesch <m@bues.ch>
+ 2008, Luis Carlos Cobo <luisca@cozybit.com>
+ 2008, Jouni Malinen <jouni.malinen@atheros.com>
+ 2008, Colin McCabe <colin@cozybit.com>
+ 2008, 2009, Luis R. Rodriguez <lrodriguez@atheros.com>
+ 2006-2010, Johannes Berg <johannes@sipsolutions.net>
 License: ISC
 
 Files: src/systemd/sd-dhcp-client.h