diff --git a/nbdkit.spec b/nbdkit.spec
index e2953c6..324e36b 100644
--- a/nbdkit.spec
+++ b/nbdkit.spec
@@ -46,7 +46,7 @@ ExclusiveArch:  x86_64
 
 Name:           nbdkit
 Version:        1.23.13
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        NBD server
 
 License:        BSD
@@ -1266,6 +1266,9 @@ export LIBGUESTFS_TRACE=1
 
 
 %changelog
+* Thu Jan 07 2021 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.23.13-2
+- F-34: rebuild against ruby 3.0
+
 * Tue Dec 29 2020 Richard W.M. Jones <rjones@redhat.com> - 1.23.13-1
 - New upstream development version 1.23.13.
 - Add configure --with-extra.