diff --git a/words.spec b/words.spec
index 9f74f58..096f57e 100644
--- a/words.spec
+++ b/words.spec
@@ -1,8 +1,11 @@
 Summary: A dictionary of English words for the /usr/share/dict directory
 Name: words
 Version: 3.0
-Release: 41%{?dist}
-License: Public Domain
+Release: 42%{?dist}
+
+# https://gitlab.com/fedora/legal/fedora-license-data/-/commit/1fe1c5769b177e00749a324557f6631a964770b1
+License: LicenseRef-Fedora-Public-Domain
+
 # Note that Moby Project officially does not exist any more. The most complete
 # information about the project is in Wikipedia.
 URL: http://en.wikipedia.org/wiki/Moby_Project
@@ -75,6 +78,9 @@ ln -sf linux.words $RPM_BUILD_ROOT%{_datadir}/dict/words
 %{_datadir}/dict/words
 
 %changelog
+* Tue Apr 25 2023 Lukáš Zaoral <lzaoral@redhat.com> - 3.0-42
+- migrate to SPDX license format
+
 * Sat Jan 21 2023 Fedora Release Engineering <releng@fedoraproject.org> - 3.0-41
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild