diff --git a/python-dbus.spec b/python-dbus.spec
index f6e80a5..59e65c6 100644
--- a/python-dbus.spec
+++ b/python-dbus.spec
@@ -1,6 +1,6 @@
 Name:          python-dbus
 Version:       1.2.8
-Release:       2mamba
+Release:       3mamba
 Summary:       D-Bus python bindings for use with python programs
 Group:         System/Libraries/Python
 Vendor:        openmamba
@@ -16,6 +16,7 @@ BuildRequires: libdbus-glib-devel
 BuildRequires: libglib-devel
 BuildRequires: libpython-devel
 ## AUTOBUILDREQ-END
+BuildRequires: libpython3-devel >= 3.7.4
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 Provides:      dbus-python
 Obsoletes:     dbus-python
@@ -91,6 +92,9 @@ rm -rf %{buildroot}%{_datadir}/doc/dbus-python
 %doc ChangeLog NEWS README doc/*.txt
 
 %changelog
+* Thu Aug 08 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 1.2.8-3mamba
+- rebuilt with python3 3.7.4
+
 * Fri Mar 01 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 1.2.8-2mamba
 - rebuilt with python 3.6 package