diff --git a/chrony.spec b/chrony.spec
index bfa1004..151a583 100644
--- a/chrony.spec
+++ b/chrony.spec
@@ -2,14 +2,14 @@
 %define chrony_userid  55
 
 Name:          chrony
-Version:       3.5.1
+Version:       4.0
 Release:       1mamba
 Summary:       A pair of programs which are used to maintain the accuracy of the system clock on a computer
 Group:         System/Servers
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://chrony.tuxfamily.org/index.html
+URL:           https://chrony.tuxfamily.org/index.html
 Source:        http://download.tuxfamily.org/chrony/chrony-%{version}.tar.gz
 Source1:       chrony-conf
 Source2:       chronyd-initscript
@@ -133,6 +133,9 @@ fi
 #NEWS README chrony.txt examples/chrony.conf.example examples/chrony.keys.example
 
 %changelog
+* Thu Feb 04 2021 Automatic Build System <autodist@mambasoft.it> 4.0-1mamba
+- automatic version update by autodist
+
 * Sun Aug 30 2020 Automatic Build System <autodist@mambasoft.it> 3.5.1-1mamba
 - automatic version update by autodist