diff --git a/mono.spec b/mono.spec
index f2599d5..a155e92 100644
--- a/mono.spec
+++ b/mono.spec
@@ -1,7 +1,7 @@
 %define pkgver %(echo %version | cut -d. -f1-3)
 Name:          mono
 Version:       6.12.0.182
-Release:       1mamba
+Release:       2mamba
 Summary:       A .NET runtime environment
 Group:         Applications/Development
 Vendor:        openmamba
@@ -20,7 +20,6 @@ License:       GPL, LGPL, MIT, BSD
 BuildRequires: glibc-devel
 BuildRequires: libgcc
 BuildRequires: libkrb5-devel
-BuildRequires: libstdc++6-devel
 BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
 BuildRequires: bison
@@ -44,8 +43,6 @@ Provides:      mono-web
 Obsoletes:     mono-web < 6.12.0.122
 Provides:      mono-winforms
 Obsoletes:     mono-winforms < 6.12.0.122
-Provides:      mono-nunit
-Obsoletes:     mono-nunit < 6.12.0.122
 Provides:      mono-data
 Obsoletes:     mono-data < 6.12.0.122
 Provides:      mono-locale-extras
@@ -94,8 +91,6 @@ Group:         Development/Languages
 Obsoletes:     mono-cilc < 6.12.0.122
 Provides:      mono-cilc = %{?epoch:%epoch:}%{version}-%{release}
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
-Provides:      mono-nunit-devel
-Obsoletes:     mono-nunit-devel < 6.12.0.122
 Provides:      monodoc-devel
 Obsoletes:     monodoc-devel < 6.12.0.122
 Requires:      libglib-devel
@@ -154,7 +149,7 @@ This package completes the Mono developer toolchain with the mono profiler, asse
 #   --with-static_mono=yes \
 
 %make
-#-j1
+
 make -C mcs/jay
 
 #make check
@@ -418,24 +413,17 @@ fi
 %{_libdir}/lib%{name}-2.0.la
 %ifnarch aarch64
 %{_libdir}/libmonoboehm-2.0.a
-%{_libdir}/libmonoboehm-2.0.la
 %{_libdir}/libmonoboehm-2.0.so
 %endif
 %{_libdir}/lib%{name}sgen-2.0.so
 %{_libdir}/lib%{name}sgen-2.0.a
-%{_libdir}/lib%{name}sgen-2.0.la
 %{_libdir}/libmono-native.a
-%{_libdir}/libmono-native.la
 %{_libdir}/libmono-native.so
 %{_libdir}/lib%{name}-profiler-*.a
-%{_libdir}/lib%{name}-profiler-*.la
 %{_libdir}/lib%{name}-profiler-*.so
 %{_libdir}/libikvm-native.a
-%{_libdir}/libikvm-native.la
 %{_libdir}/libMonoPosixHelper.a
-%{_libdir}/libMonoPosixHelper.la
 %{_libdir}/libMonoSupportW.a
-%{_libdir}/libMonoSupportW.la
 
 %{_libdir}/pkgconfig/aspnetwebstack.pc
 %{_libdir}/pkgconfig/cecil.pc
@@ -458,6 +446,9 @@ fi
 #%doc ChangeLog NEWS
 
 %changelog
+* Thu Mar 09 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 6.12.0.182-2mamba
+- don't obsolete mono-nunit
+
 * Thu Jun 16 2022 Automatic Build System <autodist@mambasoft.it> 6.12.0.182-1mamba
 - automatic version update by autodist