diff --git a/bison.spec b/bison.spec
index 4facf28..216f1e6 100644
--- a/bison.spec
+++ b/bison.spec
@@ -1,12 +1,12 @@
 Name:          bison
-Version:       3.7.5
+Version:       3.7.6
 Release:       1mamba
 Summary:       A GNU general-purpose parser generator
 Group:         Applications/Development
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.gnu.org/software/bison/bison.html
+URL:           https://www.gnu.org/software/bison/bison.html
 Source:        ftp://ftp.gnu.org/pub/gnu/bison/bison-%{version}.tar.xz
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
@@ -20,7 +20,6 @@ Requires(post):%{__install_info}
 %if "%{?stage1}" != "1"
 BuildRequires: valgrind
 %endif
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 Bison is a general purpose parser generator which converts a grammar description for an LALR context-free grammar into a C program to parse that grammar.
@@ -81,6 +80,9 @@ cat %{name}-runtime.lang %{name}-gnulib.lang >> %{name}.lang
 # ChangeLog NEWS README THANKS TODO
 
 %changelog
+* Tue Mar 09 2021 Automatic Build System <autodist@mambasoft.it> 3.7.6-1mamba
+- automatic version update by autodist
+
 * Sun Jan 24 2021 Automatic Build System <autodist@mambasoft.it> 3.7.5-1mamba
 - automatic version update by autodist