diff --git a/simspark.spec b/simspark.spec
index 2884ae0..26736c2 100644
--- a/simspark.spec
+++ b/simspark.spec
@@ -1,6 +1,6 @@
 Name:           simspark
 Version:        0.2.4
-Release:        21%{?dist}
+Release:        22%{?dist}
 Summary:        Spark physical simulation system
 
 Group:          Development/Libraries
@@ -75,6 +75,9 @@ rm -rf %{buildroot}/%{_datadir}/doc
 %doc doc/devel/howtos doc/devel/manual.pdf
 
 %changelog
+* Fri Jan 13 2017 Mamoru TASAKA <mtasaka@fedoraproject.org> - 0.2.4-22
+- F-26: rebuild for ruby24
+
 * Tue May 17 2016 Jonathan Wakely <jwakely@redhat.com> - 0.2.4-21
 - Rebuilt for linker errors in boost (#1331983)