diff --git a/gnuchess.spec b/gnuchess.spec
index 6d70e08..9318ece 100644
--- a/gnuchess.spec
+++ b/gnuchess.spec
@@ -1,24 +1,25 @@
 %define        book_version 1.01
 Name:          gnuchess
-Version:       6.2.7
+Version:       6.2.8
 Release:       1mamba
 Summary:       GNU Chess lets most modern computers play a full game of chess
 Group:         Applications/Games
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.gnu.org/software/chess/
+URL:           https://www.gnu.org/software/chess/
 Source:        http://ftp.gnu.org/pub/gnu/chess/%{name}-%{version}.tar.gz
 Source1:       http://ftp.gnu.org/pub/gnu/chess/book_%{book_version}.pgn.gz
 Patch0:        %{name}-5.07-input_thread.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
+BuildRequires: libgcc
 BuildRequires: libncurses-devel
 BuildRequires: libreadline-devel
+BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
 Requires(post): %{__install_info}
-BuildRoot:     %{_tmppath}/%{name}-%{version}-buildroot
 
 %description
 GNU Chess lets most modern computers play a full game of chess.
@@ -73,6 +74,9 @@ exit 0
 # ChangeLog INSTALL NEWS README TODO
 
 %changelog
+* Mon May 10 2021 Automatic Build System <autodist@mambasoft.it> 6.2.8-1mamba
+- automatic version update by autodist
+
 * Mon Jun 08 2020 Automatic Build System <autodist@mambasoft.it> 6.2.7-1mamba
 - automatic version update by autodist