diff --git a/libraw.spec b/libraw.spec
index 1f53d2b..d5bc19b 100644
--- a/libraw.spec
+++ b/libraw.spec
@@ -1,6 +1,6 @@
 Name:          libraw
 Version:       0.21.1
-Release:       1mamba
+Release:       2mamba
 Summary:       A library for reading RAW files obtained from digital photo cameras
 Group:         System/Libraries
 Vendor:        openmamba
@@ -19,6 +19,7 @@ BuildRequires: liblcms2-devel
 BuildRequires: libstdc++6-devel
 BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
+Obsoletes:     libraw19 < 0.20
 
 %description
 LibRaw is a library for reading RAW files obtained from digital photo cameras (CRW/CR2, NEF, RAF, DNG, and others).
@@ -27,6 +28,7 @@ LibRaw is a library for reading RAW files obtained from digital photo cameras (C
 Group:         Development/Libraries
 Summary:       Development files for %{name}
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+Obsoletes:     libraw19-devel < 0.20
 
 %description devel
 LibRaw is a library for reading RAW files obtained from digital photo cameras (CRW/CR2, NEF, RAF, DNG, and others).
@@ -36,6 +38,7 @@ This package contains static libraries and header files need for development.
 Group:         Applications/Graphics
 Summary:       Utility applications for %{name}
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+Obsoletes:     libraw19-tools < 0.20
 
 %description tools
 The %{name}-tools package contains utility applications for %{name}.
@@ -95,6 +98,9 @@ rm -f %{buildroot}%{_libdir}/libraw_r.a
 %{_bindir}/unprocessed_raw
 
 %changelog
+* Thu Oct 19 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 0.21.1-2mamba
+- obsolete libraw19
+
 * Thu Jan 05 2023 Automatic Build System <autodist@mambasoft.it> 0.21.1-1mamba
 - automatic version update by autodist