diff --git a/bullet.spec b/bullet.spec
index d03c872..c937f48 100644
--- a/bullet.spec
+++ b/bullet.spec
@@ -1,27 +1,24 @@
 %define pkgver %(echo %version | tr _ -)
 Name:          bullet
-Version:       3.07
-Release:       2mamba
+Version:       3.21
+Release:       1mamba
 Summary:       A Collision Detection and Rigid Body Dynamics Library
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://bulletphysics.org
+URL:           https://pybullet.org/wordpress/
 Source:        https://github.com/bulletphysics/bullet3.git/%{version}/bullet3-%{version}.tar.bz2
 Patch0:        bullet-3.07-upstream-release-fix.patch
 License:       zlib
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: ldconfig
 BuildRequires: libgcc
 BuildRequires: libpython3-devel
 BuildRequires: libstdc++6-devel
-BuildRequires: python3
 ## AUTOBUILDREQ-END
 BuildRequires: cmake
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 Bullet is a Collision Detection and Rigid Body Dynamics Library
@@ -37,8 +34,7 @@ This package contains shared libraries for %{name}.
 Group:         Development/Libraries
 Summary:       Development files for %{name}
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
-## note: you can add this requirement if .pc files are provided by this package
-#Requires:      pkg-config
+Requires:      pkg-config
 
 %description -n lib%{name}-devel
 This package contains libraries and header files for developing applications that use %{name}.
@@ -48,15 +44,17 @@ Group:         System/Libraries/Python
 Summary:       Python bindings for %{name}
 
 %description -n python-%{name}-py3
-This package contains the Python bindings forr %{name}.
+This package contains the Python bindings for %{name}.
 
 %debug_package
 
 %prep
 %setup -q -n %{name}3-%{pkgver}
-%patch0 -p1
+#-D -T
+#%patch0 -p1
 
 %build
+#:<< _EOF
 %cmake -d build \
   -DBUILD_SHARED_LIBS=1 \
   -DINSTALL_LIBS=1 \
@@ -64,9 +62,10 @@ This package contains the Python bindings forr %{name}.
   -DBUILD_PYBULLET=ON \
   -DBUILD_PYBULLET_NUMPY=ON \
   -DBUILD_OPENGL3_DEMOS=ON \
-  -DBUILD_BULLET2_DEMOS=OFF \
-  -DBUILD_UNIT_TESTS=OFF \
-  -DBUILD_EXTRAS=OFF
+  -DBUILD_BULLET2_DEMOS=ON \
+  -DBUILD_EXTRAS=ON
+
+#-DBUILD_UNIT_TESTS=OFF \
 
 %make
 
@@ -98,6 +97,7 @@ doxygen
 %files -n lib%{name}-devel
 %defattr(-,root,root)
 %{_includedir}/*
+%{_prefix}/lib/libclsocket.a
 %{_libdir}/*.so
 %dir %{_libdir}/cmake/bullet
 %{_libdir}/cmake/bullet/BulletConfig.cmake
@@ -115,12 +115,30 @@ doxygen
 %{python3_sitearch}/pybullet_data/*
 %dir %{python3_sitearch}/pybullet_envs
 %{python3_sitearch}/pybullet_envs/*
+%dir %{python3_sitearch}/pybullet_examples
+%{python3_sitearch}/pybullet_examples/*
 %dir %{python3_sitearch}/pybullet_robots
 %{python3_sitearch}/pybullet_robots/*
 %dir %{python3_sitearch}/pybullet_utils
 %{python3_sitearch}/pybullet_utils/*
+%{python3_sitelib}/*pybullet.so*
 
 %changelog
+* Fri Dec 10 2021 Automatic Build System <autodist@mambasoft.it> 3.21-1mamba
+- automatic version update by autodist
+
+* Mon Aug 02 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 3.17-2mamba
+- rebuilt with extra libraries
+
+* Tue May 11 2021 Automatic Build System <autodist@mambasoft.it> 3.17-1mamba
+- automatic version update by autodist
+
+* Fri Mar 05 2021 Automatic Build System <autodist@mambasoft.it> 3.09-1mamba
+- automatic version update by autodist
+
+* Mon Dec 28 2020 Automatic Build System <autodist@mambasoft.it> 3.08-1mamba
+- automatic version update by autodist
+
 * Fri Dec 11 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 3.07-2mamba
 - rebuilt with cmake options and python binding