diff --git a/kdegraphics-mobipocket.spec b/kdegraphics-mobipocket.spec
index bd10cb5..7ec0066 100644
--- a/kdegraphics-mobipocket.spec
+++ b/kdegraphics-mobipocket.spec
@@ -1,6 +1,6 @@
 Name:          kdegraphics-mobipocket
 Version:       20.08.1
-Release:       2mamba
+Release:       3mamba
 Summary:       Mobipocket plugins for Strigi indexing, Okular and thumbnails
 Group:         Graphical Desktop/Applications/Graphics
 Vendor:        openmamba
@@ -29,6 +29,7 @@ BuildRequires: cmake
 Requires:      okular
 Requires:      strigi
 Obsoletes:     mobipocket
+Obsoletes:     kdegraphics-mobipocket4
 Provides:      mobipocket = %{?epoch:%epoch:}%{version}-%{release}
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
@@ -39,6 +40,7 @@ BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 Group:         Development/Libraries
 Summary:       Development files for %{name}
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+Obsoletes:     kdegraphics-mobipocket4-devel
 
 %description devel
 This package contains libraries and header files for developing applications that use %{name}.
@@ -90,6 +92,9 @@ exit 0
 %{_kde5_libdir}/libqmobipocket.so
 
 %changelog
+* Fri Sep 11 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 20.08.1-3mamba
+- obsolete kdegraphics-mobipocket4
+
 * Wed Sep 09 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 20.08.1-2mamba
 - removed requirement for kdelibs