diff --git a/po/de.po b/po/de.po
index 7423495d..ec090e6c 100644
--- a/po/de.po
+++ b/po/de.po
@@ -1,3 +1,5 @@
+# Hermann J. Beckers <hj.beckers@onlinehome.de>, 2001
+# Ismael Luceno <ismael@iodev.co.uk>, 2019
 msgid ""
 msgstr ""
 "Project-Id-Version: Axel\n"
diff --git a/po/es.po b/po/es.po
index 1d78e434..b2f404b4 100644
--- a/po/es.po
+++ b/po/es.po
@@ -1,5 +1,5 @@
 # Spanish translations for axel package.
-# Copyright 2017 Ismael Luceno
+# Copyright 2017, 2019 Ismael Luceno
 # This file is distributed under the same license as the axel package.
 # Ismael Luceno <ismael@iodev.co.uk>, 2017.
 #
diff --git a/po/nl.po b/po/nl.po
index 129ed761..a8be8459 100644
--- a/po/nl.po
+++ b/po/nl.po
@@ -1,3 +1,5 @@
+# Wilmer van der Gaast <wilmer@gaast.net>, 2001
+# Ismael Luceno <ismael@iodev.co.uk>, 2019
 msgid ""
 msgstr ""
 "Project-Id-Version: Axel\n"
diff --git a/po/pt_BR.po b/po/pt_BR.po
index 0e60bf1e..62052161 100644
--- a/po/pt_BR.po
+++ b/po/pt_BR.po
@@ -1,9 +1,9 @@
 # Portuguese translations for axel package.
 # Copyright (C) 2016-2017 Joao Eriberto Mota Filho
-# Copyright 2017 Ismael Luceno
+# Copyright 2017-2019 Ismael Luceno
 # This file is distributed under the same license as the axel package.
 # Eriberto Mota <eriberto@eriberto.pro.br>, 2016-2017.
-# Ismael Luceno <ismael@iodev.co.uk>, 2017.
+# Ismael Luceno <ismael@iodev.co.uk>, 2017-2019.
 #
 msgid ""
 msgstr ""
diff --git a/po/zh_CN.po b/po/zh_CN.po
index 2b21472b..0a118940 100644
--- a/po/zh_CN.po
+++ b/po/zh_CN.po
@@ -1,3 +1,5 @@
+# Shuge Lee <shuge.lee@gmail.com>, 2008.
+# Jeff Bai <jeffbai@aosc.xyz>, 2016.
 msgid ""
 msgstr ""
 "Project-Id-Version: Axel\n"