diff --git a/opencv.spec b/opencv.spec
index c4dab3a..3c70448 100644
--- a/opencv.spec
+++ b/opencv.spec
@@ -2,7 +2,7 @@
 %define javaver %(echo %version | cut -d. -f1-3 | tr -d .)
 Name:          opencv
 Version:       4.8.1
-Release:       1mamba
+Release:       2mamba
 Summary:       Collection of algorithms for computer vision
 Group:         Development/Libraries
 Vendor:        openmamba
@@ -51,6 +51,7 @@ BuildRequires: libz-devel
 BuildRequires: qt6-qtbase-devel
 ## AUTOBUILDREQ-END
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
+Obsoletes:     opencv41 < 4.2
 
 %description
 OpenCV (Open Source Computer Vision) is a library of programming functions for real time computer vision.
@@ -59,6 +60,7 @@ OpenCV (Open Source Computer Vision) is a library of programming functions for r
 Summary:       Collection of algorithms for computer vision
 Group:         System/Libraries
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+Obsoletes:     libopencv41 < 4.2
 
 %description -n lib%{name}
 OpenCV (Open Source Computer Vision) is a library of programming functions for real time computer vision. 
@@ -71,6 +73,7 @@ Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
 %ifnarch arm
 Requires:      java-opencv = %{?epoch:%epoch:}%{version}-%{release}
 %endif
+Obsoletes:     libopencv41-devel < 4.2
 
 %description -n lib%{name}-devel
 OpenCV (Open Source Computer Vision) is a library of programming functions for real time computer vision. 
@@ -80,6 +83,7 @@ This package contains static libraries and header files need for development.
 Summary:       Java bindings for apps which use OpenCV
 Group:         Development/Libraries
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+Obsoletes:     java-opencv41 < 4.2
 
 %description -n java-%{name}
 This package contains Python bindings for the OpenCV library.
@@ -97,7 +101,7 @@ Obsoletes:     python-cv < 4.7.0-2mamba
 %description -n python-cv-py2
 This package contains Python bindings for the OpenCV library.
 
-%package -n python-cv-py310
+%package -n python-cv-py3
 Summary:       Python bindings for apps which use OpenCV
 Group:         Development/Libraries
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
@@ -105,15 +109,17 @@ Requires:      python-Pillow-py310
 Requires:      python-numpy-py310
 Obsoletes:     python-cv-py3 < 4.7.0-2mamba
 Obsoletes:     python-cv-py36 <= 4.1.2-4mamba
+Obsoletes:     python-cv-py310 < 4.8.1-2mamba
 
-%description -n python-cv-py310
+%description -n python-cv-py3
 This package contains Python bindings for the OpenCV library.
 
 %debug_package
 
 %prep
 %setup -q -a1
-#% setup -q -D -T
+#% setup -q
+#-D -T
 #:<< _EOF
 
 %ifarch %{ix86}
@@ -156,8 +162,8 @@ export JAVACMD=%{_jvmdir}/jdk/bin/java
  -DBUILD_SWIG_PYTHON_SUPPORT=1 \
  -DINSTALL_C_EXAMPLES=0 \
  -DCMAKE_CXX_FLAGS:STRING="%{optflags} -D__STDC_CONSTANT_MACROS" \
- -DPYTHON3_EXECUTABLE:PATH=%{__python310} \
- -DPYTHON3_PACKAGES_PATH:PATH=%{python310_sitelib} \
+ -DPYTHON3_EXECUTABLE:PATH=%{__python3} \
+ -DPYTHON3_PACKAGES_PATH:PATH=%{python3_sitelib} \
  -DOPENCV_GENERATE_PKGCONFIG=ON \
  -DOPENCV_ENABLE_NONFREE=ON \
  -DOPENCV_EXTRA_MODULES_PATH=${PWD}/../opencv_contrib-%{version}/modules \
@@ -221,12 +227,15 @@ rm -fr %{buildroot}%{_datadir}/opencv/doc
 %dir %{python27_sitelib}/cv2
 %{python27_sitelib}/cv2/*
 
-%files -n python-cv-py310
+%files -n python-cv-py3
 %defattr(-,root,root)
-%dir %{python310_sitelib}/cv2
-%{python310_sitelib}/cv2/*
+%dir %{python3_sitelib}/cv2
+%{python3_sitelib}/cv2/*
 
 %changelog
+* Thu Oct 19 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 4.8.1-2mamba
+- obsolete opencv41
+
 * Thu Sep 28 2023 Automatic Build System <autodist@mambasoft.it> 4.8.1-1mamba
 - automatic version update by autodist