diff --git a/strace.spec b/strace.spec
index b8b1a29..3d4a954 100644
--- a/strace.spec
+++ b/strace.spec
@@ -1,5 +1,5 @@
 Name:          strace
-Version:       4.19
+Version:       4.20
 Release:       1mamba
 Summary:       A debugging tool which prints out all the system calls made by a process/program
 Group:         Development/Tools
@@ -61,6 +61,9 @@ This package contains strace-graph, a script that processes strace output files.
 %{_bindir}/strace-graph
 
 %changelog
+* Wed Dec 27 2017 Automatic Build System <autodist@mambasoft.it> 4.20-1mamba
+- automatic version update by autodist
+
 * Fri Nov 03 2017 Automatic Build System <autodist@mambasoft.it> 4.19-1mamba
 - automatic version update by autodist