diff --git a/doc/supervision.sgml b/doc/supervision.sgml
index c2ed425dd..153746025 100644
--- a/doc/supervision.sgml
+++ b/doc/supervision.sgml
@@ -4,7 +4,7 @@
 
 <title>Watara Supervision specific information for cc65
 <author><url url="mailto:polluks@sdf.lonestar.org" name="Stefan A. Haubenthal">
-<date>2014-04-12
+<date>2017-11-21
 
 <abstract>
 An overview over the Supervision runtime system as it is implemented for the