diff --git a/unbound-remove-buildin-key.patch b/unbound-remove-buildin-key.patch
new file mode 100644
index 0000000000000000000000000000000000000000..eabe1d3ef4f3d568ecd1986666beb401f51192b8
--- /dev/null
+++ b/unbound-remove-buildin-key.patch
@@ -0,0 +1,42 @@
+From bd895d2d82990bfe059acfb0e078bb8d44207287 Mon Sep 17 00:00:00 2001
+From: hanzhijun <hanzhijun1@huawei.com>
+Date: Fri, 19 Feb 2021 16:20:53 +0800
+Subject: [PATCH] remove buildin key
+
+---
+ smallapp/unbound-anchor.c | 19 -------------------
+ 1 file changed, 19 deletions(-)
+
+diff --git a/smallapp/unbound-anchor.c b/smallapp/unbound-anchor.c
+index b8bd1b8..4c8f404 100644
+--- a/smallapp/unbound-anchor.c
++++ b/smallapp/unbound-anchor.c
+@@ -215,25 +215,6 @@ get_builtin_cert(void)
+ 	return
+ /* The ICANN CA fetched at 24 Sep 2010.  Valid to 2028 */
+ "-----BEGIN CERTIFICATE-----\n"
+-"MIIDdzCCAl+gAwIBAgIBATANBgkqhkiG9w0BAQsFADBdMQ4wDAYDVQQKEwVJQ0FO\n"
+-"TjEmMCQGA1UECxMdSUNBTk4gQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkxFjAUBgNV\n"
+-"BAMTDUlDQU5OIFJvb3QgQ0ExCzAJBgNVBAYTAlVTMB4XDTA5MTIyMzA0MTkxMloX\n"
+-"DTI5MTIxODA0MTkxMlowXTEOMAwGA1UEChMFSUNBTk4xJjAkBgNVBAsTHUlDQU5O\n"
+-"IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MRYwFAYDVQQDEw1JQ0FOTiBSb290IENB\n"
+-"MQswCQYDVQQGEwJVUzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAKDb\n"
+-"cLhPNNqc1NB+u+oVvOnJESofYS9qub0/PXagmgr37pNublVThIzyLPGCJ8gPms9S\n"
+-"G1TaKNIsMI7d+5IgMy3WyPEOECGIcfqEIktdR1YWfJufXcMReZwU4v/AdKzdOdfg\n"
+-"ONiwc6r70duEr1IiqPbVm5T05l1e6D+HkAvHGnf1LtOPGs4CHQdpIUcy2kauAEy2\n"
+-"paKcOcHASvbTHK7TbbvHGPB+7faAztABLoneErruEcumetcNfPMIjXKdv1V1E3C7\n"
+-"MSJKy+jAqqQJqjZoQGB0necZgUMiUv7JK1IPQRM2CXJllcyJrm9WFxY0c1KjBO29\n"
+-"iIKK69fcglKcBuFShUECAwEAAaNCMEAwDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8B\n"
+-"Af8EBAMCAf4wHQYDVR0OBBYEFLpS6UmDJIZSL8eZzfyNa2kITcBQMA0GCSqGSIb3\n"
+-"DQEBCwUAA4IBAQAP8emCogqHny2UYFqywEuhLys7R9UKmYY4suzGO4nkbgfPFMfH\n"
+-"6M+Zj6owwxlwueZt1j/IaCayoKU3QsrYYoDRolpILh+FPwx7wseUEV8ZKpWsoDoD\n"
+-"2JFbLg2cfB8u/OlE4RYmcxxFSmXBg0yQ8/IoQt/bxOcEEhhiQ168H2yE5rxJMt9h\n"
+-"15nu5JBSewrCkYqYYmaxyOC3WrVGfHZxVI7MpIFcGdvSb2a1uyuua8l0BKgk3ujF\n"
+-"0/wsHNeP22qNyVO+XVBzrM8fk8BSUFuiT/6tZTYXRtEt5aKQZgXbKU5dUF3jT9qg\n"
+-"j/Br5BZw3X/zd325TvnswzMC1+ljLzHnQGGk\n"
+ "-----END CERTIFICATE-----\n"
+ 		;
+ }
+-- 
+1.8.3.1
+
diff --git a/unbound.spec b/unbound.spec
index 2dbcbd82c6c49e868dc971d20c1fce8595b51af6..dd3ea307f14a5c7757cb54f564789fefae1c1d04 100644
--- a/unbound.spec
+++ b/unbound.spec
@@ -2,7 +2,7 @@
 
 Name:          unbound
 Version:       1.11.0
-Release:       2
+Release:       3
 Summary:       Unbound is a validating, recursive, caching DNS resolver
 License:       BSD
 Url:           https://nlnetlabs.nl/projects/unbound/about/
@@ -23,6 +23,8 @@ Source13:      unbound-anchor.service
 
 Patch0:        CVE-2020-28935.patch
 
+Patch6000:     unbound-remove-buildin-key.patch
+
 BuildRequires: make flex swig pkgconfig systemd python-unversioned-command
 BuildRequires: libevent-devel expat-devel openssl-devel python3-devel
 BuildRequires: unbound-libs
@@ -74,6 +76,7 @@ Package help includes includes man pages for unbound.
 pushd %{name}-%{version}
 
 %patch0 -p1
+%patch6000 -p1
 
 cp -pr doc pythonmod libunbound ../
 popd
@@ -229,6 +232,12 @@ popd
 %{_mandir}/man*
 
 %changelog
+* Thu Dec 02 2021 xihaochen<xihaochen@huawei.com> - 1.11.0-3
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC:synchronize a patch
+
 * Tue Feb 23 2021 zhouyihang <zhouyihang3@huawei.com> - 1.11.0-2
 - Type:CVE
 - ID:NA