diff --git a/check_timesync b/check_timesync
index 3c22b2f2a975683dbf1d196d0c36bec0032be878..70f3870cd8835388f1b6763863adcb4a41d19afe 100755
--- a/check_timesync
+++ b/check_timesync
@@ -14,6 +14,8 @@
 # 2018-10-26  v1.0  <axel.hahn@iml.unibe.ch>
 # 2020-03-05  v1.1  <axel.hahn@iml.unibe.ch> switch to ph.* helper functions
 # 2020-05-13  v1.2  <axel.hahn@iml.unibe.ch> update pre detect output of timedatectl
+# 2021-08-19  v1.3  <martin.gasser@iml.unibe.ch> update for chrony with timedatectl 
+
 # ======================================================================
 
 . `dirname $0`/inc_pluginfunctions