diff --git a/rubygem-ferret.spec b/rubygem-ferret.spec
index 29236c4..34c0a47 100644
--- a/rubygem-ferret.spec
+++ b/rubygem-ferret.spec
@@ -3,7 +3,7 @@
 Summary: Full-featured text search engine library
 Name: rubygem-%{gem_name}
 Version: 0.11.8.4
-Release: 17%{?dist}
+Release: 18%{?dist}
 Group: Development/Languages
 # License from
 # - MIT-LICENSE: MIT
@@ -116,6 +116,9 @@ popd
 %{gem_instdir}/test/
 
 %changelog
+* Thu Jan 04 2018 Mamoru TASAKA <mtasaka@fedoraproject.org> - 0.11.8.4-18
+- F-28: rebuild for ruby25
+
 * Thu Aug 03 2017 Fedora Release Engineering <releng@fedoraproject.org> - 0.11.8.4-17
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild