diff --git a/bind.spec b/bind.spec
index 92fe68e2c4bee30ca2697cd1c9273a7954018c82..a2c8e42a7ae90a17631506b78ccf776a5847e5bc 100644
--- a/bind.spec
+++ b/bind.spec
@@ -30,7 +30,7 @@ Summary:  The Berkeley Internet Name Domain (BIND) DNS (Domain Name System) serv
 Name:     bind
 License:  MPLv2.0
 Version:  9.16.23
-Release:  8
+Release:  9
 Epoch:    32
 Url:      https://www.isc.org/downloads/bind/
 #
@@ -252,6 +252,7 @@ or maintain keys for it.
 Summary: Manual pages of DNSSEC utilities
 Requires: bind-license = %{epoch}:%{version}-%{release}
 BuildArch:noarch
+Conflicts: %{name}-utils < %{epoch}:%{version}-%{release}
 
 %description dnssec-doc
 Bind-dnssec-doc contains manual pages for bind-dnssec-utils.
@@ -1100,6 +1101,9 @@ fi;
 %endif
 
 %changelog
+* Wed Aug 31 2022 yangchenguang <yangchenguang@uniontech.com> - 32:9.16.23-9
+- DESC: fix downgrade bind-utils conflict bind-dnssec-doc
+
 * Mon Apr 11 2022 jiangheng<jiangheng12@huawei.com> - 9.16.23-8
 - Type:CVE
 - CVE:CVE-2021-25220