diff --git a/postgrey.spec b/postgrey.spec
index 6e12dec..d1a1e2d 100644
--- a/postgrey.spec
+++ b/postgrey.spec
@@ -2,11 +2,12 @@
 
 Name:              postgrey
 Version:           1.37
-Release:           22%{?dist}
+Release:           27%{?dist}
 Summary:           Postfix Greylisting Policy Server
 # File headers only state "GNU GPL", but the LICENSE sections state v2 and "any
 # later version"
-License:           GPLv2+
+# Automatically converted from old format: GPLv2+ - review is highly recommended.
+License:           GPL-2.0-or-later
 URL:               http://postgrey.schweikert.ch/
 Source0:           http://postgrey.schweikert.ch/pub/postgrey-%{version}.tar.gz
 Source1:           postgrey.service
@@ -30,7 +31,6 @@ BuildRequires:     systemd
 #Requires:          perl(Sys::Syslog)
 # Requiring postfix for its directories and GID.
 Recommends:        postfix
-Requires(pre):     shadow-utils
 Requires(post):    systemd
 Requires(preun):   systemd
 Requires(postun):  systemd
@@ -51,6 +51,11 @@ sed -i 's|nogroup|postgrey|g' postgrey
 sed -i 's|POD ||g;s|perldoc|man|g' README
 install -pm0644 %{SOURCE2} README.Fedora
 
+# Create a sysusers.d config file
+cat >postgrey.sysusers.conf <<EOF
+u postgrey - 'Postfix Greylisting Service' %{_localstatedir}/spool/postfix/postgrey -
+EOF
+
 %build
 # We only have perl scripts, so just "build" the man page.
 pod2man \
@@ -90,12 +95,8 @@ install -pDm0644 postgrey.8 \
 install -pDm0755 contrib/postgreyreport \
     %{buildroot}%{_sbindir}/postgreyreport
 
-%pre
-getent group postgrey >/dev/null || groupadd -r postgrey
-getent passwd postgrey >/dev/null || \
-    useradd -r -g postgrey -d %{_localstatedir}/spool/postfix/postgrey -s /sbin/nologin \
-    -c "Postfix Greylisting Service" postgrey
-exit 0
+install -m0644 -D postgrey.sysusers.conf %{buildroot}%{_sysusersdir}/postgrey.conf
+
 
 %post
 %systemd_post postgrey.service
@@ -128,8 +129,24 @@ exit 0
 %{_sbindir}/postgreyreport
 %{_mandir}/man8/postgrey.8*
 %dir %attr(0751,postgrey,postfix) %{_localstatedir}/spool/postfix/postgrey/
+%{_sysusersdir}/postgrey.conf
 
 %changelog
+* Fri Jul 25 2025 Fedora Release Engineering <releng@fedoraproject.org> - 1.37-27
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild
+
+* Tue Feb 11 2025 Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> - 1.37-26
+- Add sysusers.d config file to allow rpm to create users/groups automatically
+
+* Sat Jan 18 2025 Fedora Release Engineering <releng@fedoraproject.org> - 1.37-25
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
+
+* Fri Jul 26 2024 Miroslav Suchý <msuchy@redhat.com> - 1.37-24
+- convert license to SPDX
+
+* Fri Jul 19 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.37-23
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild
+
 * Fri Jan 26 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.37-22
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild