diff --git a/libeXosip2.spec b/libeXosip2.spec
index 2c4613f..2a25b9d 100644
--- a/libeXosip2.spec
+++ b/libeXosip2.spec
@@ -1,6 +1,6 @@
 Name:          libeXosip2
 Version:       4.1.0
-Release:       1mamba
+Release:       2mamba
 Summary:       A library that hides the complexity of using the SIP protocol for mutlimedia session establishement
 Group:         System/Libraries
 Vendor:        openmamba
@@ -15,7 +15,7 @@ BuildRequires: libcares-devel
 BuildRequires: libopenssl-devel
 BuildRequires: libosip2-devel
 ## AUTOBUILDREQ-END
-BuildRequires: libosip2-devel >= 4.1.0-1mamba
+BuildRequires: libosip2-devel >= 5.0.0-1mamba
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
@@ -63,6 +63,9 @@ This package contains static libraries and header files need for development.
 %doc ChangeLog NEWS README
 
 %changelog
+* Tue Aug 21 2018 Silvan Calarco <silvan.calarco@mambasoft.it> 4.1.0-2mamba
+- rebuilt by autoport with build requirements: libosip2-devel>=5.0.0-1mamba
+
 * Thu Mar 26 2015 Silvan Calarco <silvan.calarco@mambasoft.it> 4.1.0-1mamba
 - update to 4.1.0