diff --git a/sonnet.spec b/sonnet.spec
index f8975ca..c9b310b 100644
--- a/sonnet.spec
+++ b/sonnet.spec
@@ -1,7 +1,7 @@
 %define majver %(echo %version | cut -d. -f1-2)
 
 Name:          sonnet
-Version:       5.20.0
+Version:       5.21.0
 Release:       1mamba
 Summary:       Multi-language spell checker
 Group:         System/Libraries
@@ -102,6 +102,9 @@ This package contains libraries and header files for developing applications tha
 %doc README.md
 
 %changelog
+* Wed Apr 20 2016 Automatic Build System <autodist@mambasoft.it> 5.21.0-1mamba
+- automatic version update by autodist
+
 * Tue Mar 29 2016 Automatic Build System <autodist@mambasoft.it> 5.20.0-1mamba
 - automatic version update by autodist