diff --git a/libSimGear.spec b/libSimGear.spec
index a42e17c..30f76f2 100644
--- a/libSimGear.spec
+++ b/libSimGear.spec
@@ -1,15 +1,14 @@
-%define		   rel  2016.1
+%define		   rel %(echo %version | cut -d. -f1-2)
 Name:          libSimGear
-Version:       2016.1.1
+Version:       2020.3.8
 Release:       1mamba
 Summary:       Tools and libraries useful for FlightGear
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.simgear.org/
-Source:		   http://netix.dl.sourceforge.net/project/flightgear/release-%{rel}/simgear-%{version}.tar.bz2
-#Source:        ftp://ftp.ihg.uni-duisburg.de/Mirrors/ftp.simgear.org/Source/simgear-%{version}.tar.bz2
+URL:           https://www.simgear.org/
+Source:		   https://sourceforge.net/projects/flightgear/files/release-%{rel}/simgear-%{version}.tar.bz2
 Patch0:        %{name}-1.9.1-gcc44.patch
 Patch1:        libSimGear-3.4.0-OpenSceneGraph-3.4.0.patch
 License:       LGPL
@@ -28,9 +27,8 @@ BuildRequires: libopenal-devel >= 0.0
 BuildRequires: libplib-devel >= 1.8.4
 BuildRequires: zlib-devel >= 1.2.2
 BuildRequires: OpenSceneGraph >= 3.4.0
-Provides:      SimGear = %{version}-%{release}
-Obsoletes:     SimGear
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
+Provides:      SimGear = %{?epoch:%epoch:}%{version}-%{release}
+Obsoletes:     SimGear < 2016.1.1
 
 %description
 This package contains a tools and libraries useful for constructing simulation and visualization applications such as FlightGear or TerraGear.
@@ -38,11 +36,13 @@ This package contains a tools and libraries useful for constructing simulation a
 %package devel
 Group:         Development/Libraries
 Summary:       Static libraries and headers for %{name}
-Provides:      SimGear-devel = %{version}-%{release}
-Obsoletes:     SimGear-devel
+Provides:      SimGear-devel = %{?epoch:%epoch:}%{version}-%{release}
+Obsoletes:     SimGear-devel < 2016.1.1
 
 %description devel
-This package contains static libraries and header files need for development.
+This package contains static libraries and header files needed for development.
+
+%debug__package
 
 %prep
 %setup -q -n simgear-%{version}
@@ -63,16 +63,16 @@ This package contains static libraries and header files need for development.
 %defattr(-,root,root)
 %dir %{_includedir}/simgear
 %{_includedir}/simgear/*
-%{_libdir}/libSimGearCore.a
-%{_libdir}/libSimGearScene.a
-%{_prefix}/lib/cmake/SimGear/SimGearConfig.cmake
-%{_prefix}/lib/cmake/SimGear/SimGearConfigVersion.cmake
-%{_prefix}/lib/cmake/SimGear/SimGearTargets-release.cmake
-%{_prefix}/lib/cmake/SimGear/SimGearTargets.cmake
+%{_libdir}/libSimGearCored.a
+%{_libdir}/libSimGearScened.a
+%dir %{_libdir}/cmake/SimGear
+%{_libdir}/cmake/SimGear/SimGear*.cmake
 %doc AUTHORS COPYING
-#NEWS README README.zlib TODO
 
 %changelog
+* Sat Mar 27 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 2020.3.8-1mamba
+- update to 2020.3.8
+
 * Fri Mar 04 2016 Ercole 'ercolinux' Carpanetto <ercole69@gmail.com> 2016.1.1-1mamba
 - update to 2016.1.1