diff --git a/libmd.spec b/libmd.spec
index 8fdc8d8..7b58da4 100644
--- a/libmd.spec
+++ b/libmd.spec
@@ -1,6 +1,6 @@
 Name:          libmd
 Version:       1.1.0
-Release:       2mamba
+Release:       3mamba
 Summary:       Message Digest functions from BSD systems
 Group:         System/Libraries
 Vendor:        openmamba
@@ -12,6 +12,7 @@ License:       BSD
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
 ## AUTOBUILDREQ-END
+Obsoletes:     skey <= 1.1.5-2mamba
 
 %description
 Message Digest functions from BSD systems.
@@ -21,6 +22,7 @@ Group:         Development/Libraries
 Summary:       Development files for %{name}
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 Requires:      pkg-config
+Obsoletes:     skey-devel <= 1.1.5-2mamba
 
 %description devel
 This package contains libraries and header files for developing applications that use %{name}.
@@ -64,6 +66,9 @@ This package contains libraries and header files for developing applications tha
 %doc README
 
 %changelog
+* Sun Nov 19 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 1.1.0-3mamba
+- obsolete conflicting skey-devel and skey
+
 * Fri Nov 17 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 1.1.0-2mamba
 - install includes in %_includedir instead of %_includedir/md