diff --git a/doc/HTML.xsl b/doc/HTML.xsl
index 6794deb9..fbf69bff 100644
--- a/doc/HTML.xsl
+++ b/doc/HTML.xsl
@@ -12,7 +12,7 @@
   <xsl:strip-space elements="pretty"/>
 
 <!--
-Copyright (C) 2014-2018 Greenbone Networks GmbH
+Copyright (C) 2014-2020 Greenbone Networks GmbH
 
 SPDX-License-Identifier: GPL-2.0-or-later
 
diff --git a/doc/OSP.xml b/doc/OSP.xml
index b0c12fb4..8d8512cc 100644
--- a/doc/OSP.xml
+++ b/doc/OSP.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 
 <!--
-Copyright (C) 2014-2019 Greenbone Networks GmbH
+Copyright (C) 2014-2020 Greenbone Networks GmbH
 
 SPDX-License-Identifier: GPL-2.0-or-later
 
diff --git a/doc/generate b/doc/generate
index 8a07086d..8f124900 100755
--- a/doc/generate
+++ b/doc/generate
@@ -1,5 +1,5 @@
 #!/bin/bash
-# Copyright (C) 2014-2018 Greenbone Networks GmbH
+# Copyright (C) 2014-2020 Greenbone Networks GmbH
 #
 # SPDX-License-Identifier: GPL-2.0-or-later
 #
diff --git a/doc/rnc.xsl b/doc/rnc.xsl
index 772db7a0..86b6ab82 100644
--- a/doc/rnc.xsl
+++ b/doc/rnc.xsl
@@ -7,7 +7,7 @@
   <xsl:strip-space elements="*"/>
 
 <!--
-Copyright (C) 2010-2018 Greenbone Networks GmbH
+Copyright (C) 2010-2020 Greenbone Networks GmbH
 
 SPDX-License-Identifier: GPL-2.0-or-later
 
diff --git a/ospd/main.py b/ospd/main.py
index 2a645b9a..925cb080 100644
--- a/ospd/main.py
+++ b/ospd/main.py
@@ -34,7 +34,7 @@
 from ospd.logger import init_logging
 
 
-COPYRIGHT = """Copyright (C) 2014, 2015, 2018, 2019 Greenbone Networks GmbH
+COPYRIGHT = """Copyright (C) 2014-2020 Greenbone Networks GmbH
 License GPLv2+: GNU GPL version 2 or later
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law."""