diff --git a/mailutils.spec b/mailutils.spec
index 6eaa127..39be901 100644
--- a/mailutils.spec
+++ b/mailutils.spec
@@ -1,5 +1,5 @@
 Name:          mailutils
-Version:       3.12
+Version:       3.13
 Release:       1mamba
 Summary:       A swiss army knife of electronic mail handling
 Group:         System/Tools
@@ -13,8 +13,10 @@ Patch0:        mailutils-2.2-gcc-4.8.patch
 Patch1:        mailutils-2.99.99-libguile-2.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
+#libdl.so.2()(64bit): /usr/lib64/libdl.so: file not owned by any package
+#libpthread.so.0()(64bit): /usr/lib64/libpthread.so: file not owned by any package
+#libutil.so.1()(64bit): /usr/lib64/libutil.so: file not owned by any package
 BuildRequires: glibc-devel
-BuildRequires: ldconfig
 BuildRequires: libaudit-devel
 BuildRequires: libcap-ng-devel
 BuildRequires: libdb53-devel
@@ -22,16 +24,13 @@ BuildRequires: libe2fs-devel
 BuildRequires: libffi-devel
 BuildRequires: libfribidi-devel
 BuildRequires: libgc-devel
-BuildRequires: libgcrypt-devel
 BuildRequires: libgdbm-devel
 BuildRequires: libgmp-devel
 BuildRequires: libgnutls-devel
-BuildRequires: libgpg-error-devel
 BuildRequires: libgsasl-devel
 BuildRequires: libgss-devel
 BuildRequires: libguile-devel
 BuildRequires: libidn-devel
-BuildRequires: libidn2-devel
 BuildRequires: libkrb5-devel
 BuildRequires: libltdl-devel
 BuildRequires: libncurses-devel
@@ -49,13 +48,11 @@ BuildRequires: libtasn1-devel
 BuildRequires: libtirpc-devel
 BuildRequires: libunistring-devel
 BuildRequires: libwrap-devel
-BuildRequires: python3
 ## AUTOBUILDREQ-END
 BuildRequires: emacs-nox
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
 Requires(post): %{__install_info}
 Requires(preun): %{__install_info}
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 Mailutils is a swiss army knife of electronic mail handling. It offers a rich set of utilities and daemons for processing the e-mail.
@@ -92,7 +89,9 @@ Python bindings to %{name}.
 
 %build
 %configure \
-   GUILE_BINDIR=`guile-config info prefix`/bin
+   GUILE_BINDIR=`guile-config info prefix`/bin \
+   PYTHON=%{__python3} \
+   PYTHON_CONFIG=python3-config
 
 %make -j1
 
@@ -196,6 +195,9 @@ exit 0
 %{python3_sitearch}/mailutils/*
 
 %changelog
+* Sun Aug 15 2021 Automatic Build System <autodist@mambasoft.it> 3.13-1mamba
+- automatic version update by autodist
+
 * Sat Feb 13 2021 Automatic Build System <autodist@mambasoft.it> 3.12-1mamba
 - automatic version update by autodist