diff --git a/acpica.spec b/acpica.spec
index 8016abb..bc52591 100644
--- a/acpica.spec
+++ b/acpica.spec
@@ -1,6 +1,6 @@
 Name:          acpica
 Version:       20240321
-Release:       1mamba
+Release:       2mamba
 Summary:       Advanced Configuration & Power Interface Component Architecture
 Group:         System/Kernel and Hardware
 Vendor:        openmamba
@@ -17,6 +17,7 @@ License:       Intel Software License Agreement
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
 ## AUTOBUILDREQ-END
+Obsoletes:     pmtools <= 20130209-2mamba
 BuildRequires: flex
 BuildRequires: bison
 ExclusiveArch: %{ix86} x86_64
@@ -54,6 +55,9 @@ export CFLAGS="%{optflags} -Wno-dangling-pointer -Wno-format-overflow"
 %doc source/LICENSE
 
 %changelog
+* Mon Apr 15 2024 Silvan Calarco <silvan.calarco@mambasoft.it> 20240321-2mamba
+- obsolete pmtools
+
 * Thu Apr 04 2024 Automatic Build System <autodist@openmamba.org> 20240321-1mamba
 - automatic version update by autodist