diff --git a/doc/manuals/osmopcu-gb-docinfo.xml b/doc/manuals/osmopcu-gb-docinfo.xml
index 782fb2f1..175be1ce 100644
--- a/doc/manuals/osmopcu-gb-docinfo.xml
+++ b/doc/manuals/osmopcu-gb-docinfo.xml
@@ -24,7 +24,7 @@
 </authorgroup>
 
 <copyright>
-  <year>2015-2016</year>
+  <year>2015-2021</year>
   <holder>sysmocom - s.f.m.c. GmbH</holder>
 </copyright>
 
diff --git a/doc/manuals/osmopcu-usermanual-docinfo.xml b/doc/manuals/osmopcu-usermanual-docinfo.xml
index 78c80305..b7f95706 100644
--- a/doc/manuals/osmopcu-usermanual-docinfo.xml
+++ b/doc/manuals/osmopcu-usermanual-docinfo.xml
@@ -13,7 +13,7 @@
 </authorgroup>
 
 <copyright>
-  <year>2013-2016</year>
+  <year>2013-2021</year>
   <holder>sysmocom - s.f.m.c. GmbH</holder>
 </copyright>
 
diff --git a/doc/manuals/osmopcu-vty-reference.xml b/doc/manuals/osmopcu-vty-reference.xml
index 1ce9d23c..9b1154a9 100644
--- a/doc/manuals/osmopcu-vty-reference.xml
+++ b/doc/manuals/osmopcu-vty-reference.xml
@@ -15,7 +15,7 @@
     <title>OsmoPCU VTY Reference</title>
 
     <copyright>
-      <year>2014</year>
+      <year>2014-2021</year>
     </copyright>
 
     <legalnotice>