diff --git a/android-tools.spec b/android-tools.spec
index cb681b6..24fba8d 100644
--- a/android-tools.spec
+++ b/android-tools.spec
@@ -1,6 +1,6 @@
 Name:          android-tools
 Version:       31.0.3p1
-Release:       1mamba
+Release:       3mamba
 Summary:       Android platform tools
 Group:         System/Tools
 Vendor:        openmamba
@@ -23,6 +23,8 @@ BuildRequires: libzstd-devel
 ## AUTOBUILDREQ-END
 Provides:      simg2img
 Obsoletes:     simg2img <= 20161213git
+Provides:      mkbootimg
+Obsoletes:     mkbootimg <= 29.0.6
 
 %description
 Android platform tools ported to GNU/Linux for Android based devices management.
@@ -74,6 +76,12 @@ export CXX=clang++
 %doc LICENSE
 
 %changelog
+* Mon May 16 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 31.0.3p1-3mamba
+- fix obsoleting mkbootimg
+
+* Sun May 15 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 31.0.3p1-2mamba
+- replace package mkbootimg
+
 * Mon May 09 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 31.0.3p1-1mamba
 - update to 31.0.3p1