diff --git a/chkrootkit.spec b/chkrootkit.spec
index 2c4c587..1038475 100644
--- a/chkrootkit.spec
+++ b/chkrootkit.spec
@@ -1,12 +1,13 @@
 Name:          chkrootkit
-Version:       0.57
+Version:       0.58b
 Release:       1mamba
 Summary:       A tool to locally check for signs of a rootkit
 Group:         Applications/Security
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.chkrootkit.org/
+URL:           https://www.chkrootkit.org/
+# NOTE: unversioned tarball manually downloaded
 Source:        ftp://chkrootkit.org/pub/seg/pac/chkrootkit-%{version}.tar.gz
 License:       BSD
 #bsd like (see COPYRIGHT)
@@ -61,6 +62,9 @@ find -perm 755 -type f -exec install -m755 {} %{buildroot}%{_sbindir}/ \;
 #README*
 
 %changelog
+* Fri Jul 28 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 0.58b-1mamba
+- update to 0.58b
+
 * Tue Jan 17 2023 Automatic Build System <autodist@mambasoft.it> 0.57-1mamba
 - automatic version update by autodist