diff --git a/README.md b/README.md
index ce31134..5a8420f 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
 # openmamba-release
 
-Release file and Smart Package Manager configuration for openmamba 3.92.0 .
+Release file and Smart Package Manager configuration for openmamba 4.0.0 .
 
diff --git a/openmamba-release.spec b/openmamba-release.spec
index c700c6f..766da72 100644
--- a/openmamba-release.spec
+++ b/openmamba-release.spec
@@ -17,7 +17,7 @@
 %endif
 
 Name:          openmamba-release
-Version:       3.92.0
+Version:       4.0.0
 Release:       1mamba
 Summary:       Release file and Smart Package Manager configuration for %{distroid} %{fullversion} %{?codename:(%codename)}
 Group:         System/Configuration
@@ -166,6 +166,9 @@ fi
 %{_sysconfdir}/smart/distro.d/90-%{distroid}-devel-repositories.py
 
 %changelog
+* Tue Apr 18 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 4.0.0-1mamba
+- update to 4.0.0
+
 * Sun Sep 11 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 3.92.0-1mamba
 - update to 3.92.0