diff --git a/kdesvn.spec b/kdesvn.spec
index be0ebc5..c844aca 100644
--- a/kdesvn.spec
+++ b/kdesvn.spec
@@ -5,7 +5,7 @@
 
 Name:          kdesvn
 Version:       1.6.0
-Release:       3mamba
+Release:       4mamba
 Summary:       A subversion client for KDE
 Group:         Graphical Desktop/Applications/Development
 Vendor:        openmamba
@@ -37,6 +37,7 @@ BuildRequires: libjpeg-devel
 BuildRequires: libneon-devel >= 0.24.7
 Requires:      kdelibs >= %{kdever}
 Requires:      subversion >= 1.2.3
+Requires:      kdiff3
 Requires:      %{libname} = %{?epoch:%epoch:}%{version}-%{release}
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
@@ -137,6 +138,9 @@ mv %{buildroot}%{_kde4_sharedir}/man/man1/*.1 \
 %defattr(-,root,root)
 
 %changelog
+* Tue Apr 14 2015 Silvan Calarco <silvan.calarco@mambasoft.it> 1.6.0-4mamba
+- require kdiff3
+
 * Wed Sep 04 2013 Silvan Calarco <silvan.calarco@mambasoft.it> 1.6.0-3mamba
 - removed requirement for obsoleted kdesdk