diff --git a/debian/apertis/copyright b/debian/apertis/copyright
index 192e3cdd9b1d108cf09196810d8234ae4ea96f38..c77a42af424ac8bb63b25c252250f236ad9744e8 100644
--- a/debian/apertis/copyright
+++ b/debian/apertis/copyright
@@ -4,13 +4,9 @@ Files: *
 Copyright: no-info-found
 License: Apache-2.0
 
-Files: ChangeLog
-Copyright: extends to 2018.
-License: UNKNOWN
-
-Files: ChangeLog.old
-Copyright: extends to 2016.
-License: UNKNOWN
+Files: CITATION.cff
+Copyright: no-info-found
+License: GPL-3
 
 Files: Makefile.am
  ZHfstOspeller.cc
@@ -34,35 +30,21 @@ Files: Makefile.am
 Copyright: 2009, 2010, 2015, University of Helsinki
 License: Apache-2.0
 
-Files: ChangeLog ChangeLog.old hfst-ospell-office.1 hfst-ospell.1 hfst-ospell-office.1 hfst-ospell.1 tests/* tests/empty_titles.zhfst tests/no_errormodel.zhfst
-Copyright: 2009-2020, Department of Modern Languages, University of Helsinki
- See AUTHORS for more copyrights.
-License: Apache-2.0
-
 Files: debian/*
-Copyright: 2009-2020, Department of Modern Languages, University of Helsinki
-  See AUTHORS for more copyrights.
+Copyright: See AUTHORS for more copyrights.
+ 2009-2020, Department of Modern Languages, University of Helsinki
 License: Apache-2.0
 
-Files: hfst-ospell-office.1
- hfst-ospell.1
-Copyright: 2009-2018, University of Helsinki
-License: UNKNOWN
-
 Files: m4/*
 Copyright: 2011, Maarten Bosmans <mkbosmans@gmail.com>
  2008, Guido U. Draheim <guidod@gmx.de>
 License: GPL-3+ with Autoconf-2.0~Archive exception
 
-Files: tests/*
-Copyright: no-info-found
-License: UNKNOWN
-
-Files: tests/empty_titles.zhfst
-Copyright: no-info-found
-License: UNKNOWN
-
-Files: tests/no_errormodel.zhfst
-Copyright: no-info-found
-License: UNKNOWN
+Files: predict.cc
+Copyright: 2022, Flammie A Pirinen
+License: Apache-2.0
 
+Files: ChangeLog ChangeLog.old hfst-ospell-office.1 hfst-ospell.1 tests/bad_errormodel.zhfst tests/empty_titles.zhfst tests/no_errormodel.zhfst tests/speller_analyser.zhfst tests/speller_basic.zhfst tests/speller_edit1.zhfst
+Copyright: 2009-2020, Department of Modern Languages, University of Helsinki
+ See AUTHORS for more copyrights.
+License: Apache-2.0