diff --git a/nbd.spec b/nbd.spec
index d6d011b..5d47f0e 100644
--- a/nbd.spec
+++ b/nbd.spec
@@ -1,5 +1,5 @@
 Name:          nbd
-Version:       3.20
+Version:       3.21
 Release:       1mamba
 Summary:       Tools for the Linux Kernel's network block device
 Group:         System/Tools
@@ -48,6 +48,9 @@ Tools for the Linux Kernel's network block device, allowing you to use remote bl
 %doc COPYING
 
 %changelog
+* Sun Jan 17 2021 Automatic Build System <autodist@mambasoft.it> 3.21-1mamba
+- automatic version update by autodist
+
 * Tue Sep 17 2019 Automatic Build System <autodist@mambasoft.it> 3.20-1mamba
 - automatic version update by autodist