diff --git a/openbabel.spec b/openbabel.spec
index 8f377ab..31bd5a5 100644
--- a/openbabel.spec
+++ b/openbabel.spec
@@ -5,7 +5,7 @@
 
 Name: openbabel
 Version: 3.1.1
-Release: 5%{?dist}
+Release: 6%{?dist}
 Summary: Chemistry software file format converter
 License: GPLv2
 URL: https://openbabel.org/
@@ -317,6 +317,9 @@ ctest3 -j1 --force-new-ctest-process
 %{ruby_vendorarchdir}/openbabel.so
 
 %changelog
+* Thu Jan 27 2022 Vít Ondruch <vondruch@redhat.com> - 3.1.1-6
+- Rebuilt for https://fedoraproject.org/wiki/Changes/Ruby_3.1
+
 * Thu Jan 20 2022 Fedora Release Engineering <releng@fedoraproject.org> - 3.1.1-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild