4 files changed, 4 insertions, 4 deletions
diff --git a/system/doc/system_principles/error_logging.xml b/system/doc/system_principles/error_logging.xml
index 9290a1de17..9cbf7a2e94 100644
--- a/system/doc/system_principles/error_logging.xml
+++ b/system/doc/system_principles/error_logging.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>2003</year><year>2016</year>
+      <year>2003</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
diff --git a/system/doc/system_principles/part.xml b/system/doc/system_principles/part.xml
index 9f70f40dfb..6699389eec 100644
--- a/system/doc/system_principles/part.xml
+++ b/system/doc/system_principles/part.xml
@@ -4,7 +4,7 @@
 <part xmlns:xi="http://www.w3.org/2001/XInclude">
   <header>
     <copyright>
-      <year>1997</year><year>2016</year>
+      <year>1997</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
diff --git a/system/doc/system_principles/system_principles.xml b/system/doc/system_principles/system_principles.xml
index b3981f0735..500522d778 100644
--- a/system/doc/system_principles/system_principles.xml
+++ b/system/doc/system_principles/system_principles.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>1996</year><year>2015</year>
+      <year>1996</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
diff --git a/system/doc/system_principles/versions.xml b/system/doc/system_principles/versions.xml
index 355c8fd2d5..11dc9d5637 100644
--- a/system/doc/system_principles/versions.xml
+++ b/system/doc/system_principles/versions.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>2014</year><year>2016</year>
+      <year>2014</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>