diff --git a/libnetfilter_cttimeout.spec b/libnetfilter_cttimeout.spec
index 3fb4811..5093212 100644
--- a/libnetfilter_cttimeout.spec
+++ b/libnetfilter_cttimeout.spec
@@ -1,8 +1,8 @@
 Name:           libnetfilter_cttimeout
 Version:        1.0.0
-Release:        22%{?dist}
+Release:        23%{?dist}
 Summary:        Timeout policy tuning for Netfilter/conntrack
-License:        GPLv2+
+License:        GPL-2.0-or-later
 URL:            http://netfilter.org
 Source0:        http://netfilter.org/projects/%{name}/files/%{name}-%{version}.tar.bz2
 
@@ -58,6 +58,9 @@ find $RPM_BUILD_ROOT -type f -name "*.la" -exec rm -f {} ';'
 %{_includedir}/libnetfilter_cttimeout/*.h
 
 %changelog
+* Tue Aug 15 2023 Phil Sutter <psutter@redhat.com> - 1.0.0-23
+- Convert license to SPDX format
+
 * Thu Jul 20 2023 Fedora Release Engineering <releng@fedoraproject.org> - 1.0.0-22
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild