diff --git a/openbabel.spec b/openbabel.spec
index c299426..5ae229e 100644
--- a/openbabel.spec
+++ b/openbabel.spec
@@ -8,7 +8,7 @@
 
 Name: openbabel
 Version: 2.4.1
-Release: 26%{?dist}
+Release: 27%{?dist}
 Summary: Chemistry software file format converter
 License: GPLv2
 URL: https://openbabel.org/
@@ -244,6 +244,9 @@ export CTEST_OUTPUT_ON_FAILURE=1 PYTHONPATH=%{buildroot}%{python3_sitearch}
 %{ruby_vendorarchdir}/openbabel.so
 
 %changelog
+* Sun Jan 19 2020 Mamoru TASAKA <mtasaka@fedoraproject.org> - 2.4.1-27
+- F-32: rebuild against ruby27
+
 * Thu Oct 03 2019 Miro Hrončok <mhroncok@redhat.com> - 2.4.1-26
 - Rebuilt for Python 3.8.0rc1 (#1748018)