diff --git a/opencv.spec b/opencv.spec
index d07c6e5..db3d09e 100644
--- a/opencv.spec
+++ b/opencv.spec
@@ -1,15 +1,16 @@
 %define pkgver %(echo %version | sed "s|[a-z]||")
 %define javaver %(echo %version | cut -d. -f1-3 | tr -d .)
 Name:          opencv
-Version:       4.5.2
+Version:       4.5.5
 Release:       1mamba
 Summary:       Collection of algorithms for computer vision
 Group:         Development/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
-Packager:      Davide Madrisan <davide.madrisan@gmail.com>
-URL:           https://opencv.willowgarage.com/wiki/
-Source:        https://sourceforge.net/projects/opencvlibrary/files/%{version}/OpenCV%20%{version}.tar.gz
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://opencv.org/
+Source:        https://github.com/opencv/opencv.git/%{version}/opencv-%{version}.tar.bz2
+#Source:        https://sourceforge.net/projects/opencvlibrary/files/%{version}/OpenCV%20%{version}.tar.gz
 #Source:        http://downloads.sourceforge.net/project/opencvlibrary/opencv-unix/%{version}/opencv-%{version}.tar.gz
 Patch0:        %{name}-2.1.0-libpng14.patch
 Patch1:        %{name}-2.3.1-arm-build.patch
@@ -19,7 +20,6 @@ Patch4:        opencv-4.1.2-cmake-includedir.patch
 License:       BSD
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: ldconfig
 BuildRequires: libavcodec-ffmpeg-devel
 BuildRequires: libavformat-ffmpeg-devel
 BuildRequires: libavutil-ffmpeg-devel
@@ -30,8 +30,9 @@ BuildRequires: libgdk-pixbuf-devel
 BuildRequires: libglib-devel
 BuildRequires: libgst-plugins-base-devel
 BuildRequires: libgstreamer-devel
-BuildRequires: libgtk-devel
+BuildRequires: libgtk3-devel
 BuildRequires: libjpeg-devel
+BuildRequires: libopenblas-devel
 BuildRequires: libopenexr-devel
 BuildRequires: libopenjpeg-devel
 BuildRequires: libpng-devel
@@ -39,8 +40,8 @@ BuildRequires: libstdc++6-devel
 BuildRequires: libswscale-ffmpeg-devel
 BuildRequires: libtiff-devel
 BuildRequires: libwebp-devel
+BuildRequires: libxine-devel
 BuildRequires: libz-devel
-BuildRequires: python3
 ## AUTOBUILDREQ-END
 BuildRequires: libxine-devel
 #BuildRequires: python-Imaging
@@ -86,7 +87,7 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 Requires:      python-Pillow
 Requires:      python-numpy
 Provides:      opencv-python
-Obsoletes:     opencv-python
+Obsoletes:     opencv-python <= 4.1.2-4mamba
 
 %description -n python-cv
 This package contains Python bindings for the OpenCV library.
@@ -105,10 +106,9 @@ This package contains Python bindings for the OpenCV library.
 %debug_package
 
 %prep
-%setup -q -c -a0
-#% setup -D -T
+%setup -q
+#-D -T
 #:<< _EOF
-mv opencv-opencv-*/* .
 
 %ifarch %{ix86}
 %patch2 -p1
@@ -200,21 +200,20 @@ rm -fr %{buildroot}%{_datadir}/opencv/doc
 %{_datadir}/java/opencv4/opencv-*.jar
 %endif
 
-%ifnarch arm aarch64
 %files -n python-cv
 %defattr(-,root,root)
 %dir %{python_sitelib}/cv2
 %{python_sitelib}/cv2/*
-%endif
 
-%ifnarch arm
 %files -n python-cv-py3
 %defattr(-,root,root)
 %dir %{python3_sitelib}/cv2
 %{python3_sitelib}/cv2/*
-%endif
 
 %changelog
+* Mon Dec 27 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 4.5.5-1mamba
+- update to 4.5.5
+
 * Sat Apr 03 2021 Automatic Build System <autodist@mambasoft.it> 4.5.2-1mamba
 - automatic version update by autodist