diff --git a/backport-kronosnet-fix-format-truncation.patch b/backport-kronosnet-fix-format-truncation.patch
deleted file mode 100644
index 2f9a158..0000000
--- a/backport-kronosnet-fix-format-truncation.patch
+++ /dev/null
@@ -1,31 +0,0 @@
-diff -urN a/libknet/host.c b/libknet/host.c
-
---- a/libknet/host.c	2021-08-04 10:17:01.912099056 +0800
-+++ b/libknet/host.c	2021-08-04 10:17:55.708739020 +0800
-@@ -77,7 +77,7 @@
- 	/*
- 	 * set default host->name to host_id for logging
- 	 */
--	snprintf(host->name, KNET_MAX_HOST_LEN - 1, "%u", host_id);
-+	snprintf(host->name, KNET_MAX_HOST_LEN, "%u", host_id);
- 
- 	/*
- 	 * initialize links internal data
-@@ -226,7 +226,7 @@
- 	}
- 
- 	for (host = knet_h->host_head; host != NULL; host = host->next) {
--		if (!strncmp(host->name, name, KNET_MAX_HOST_LEN - 1)) {
-+		if (!strncmp(host->name, name, KNET_MAX_HOST_LEN)) {
- 			err = -1;
- 			savederrno = EEXIST;
- 			log_err(knet_h, KNET_SUB_HOST, "Duplicated name found on host_id %u",
-@@ -235,7 +235,7 @@
- 		}
- 	}
- 
--	snprintf(knet_h->host_index[host_id]->name, KNET_MAX_HOST_LEN - 1, "%s", name);
-+	snprintf(knet_h->host_index[host_id]->name, KNET_MAX_HOST_LEN, "%s", name);
- 
- exit_unlock:
- 	pthread_rwlock_unlock(&knet_h->global_rwlock);
diff --git a/kronosnet-1.13.tar.xz b/kronosnet-1.13.tar.xz
deleted file mode 100644
index 8ed637e..0000000
Binary files a/kronosnet-1.13.tar.xz and /dev/null differ
diff --git a/kronosnet-1.20.tar.gz b/kronosnet-1.20.tar.gz
new file mode 100644
index 0000000..b7dc3c5
Binary files /dev/null and b/kronosnet-1.20.tar.gz differ
diff --git a/kronosnet.spec b/kronosnet.spec
index 5ca5763..112d305 100644
--- a/kronosnet.spec
+++ b/kronosnet.spec
@@ -19,11 +19,11 @@
 %endif
 Name:                kronosnet
 Summary:             Multipoint-to-Multipoint VPN daemon
-Version:             1.13
-Release:             3
+Version:             1.20
+Release:             1
 License:             GPLv2+ and LGPLv2+
 URL:                 https://kronosnet.org
-Source0:             https://kronosnet.org/releases/%{name}-%{version}.tar.xz
+Source0:             https://kronosnet.org/releases/%{name}-%{version}.tar.gz
 BuildRequires:       gcc
 %if %{with buildman}
 BuildRequires:       libqb-devel libxml2-devel doxygen
@@ -65,8 +65,6 @@ BuildRequires:       libnl3-devel
 BuildRequires:       autoconf automake libtool
 %endif
 
-Patch0001:	backport-kronosnet-fix-format-truncation.patch
-
 %prep
 %autosetup -n kronosnet-%{version} -p1
 
@@ -436,8 +434,12 @@ Requires:            libknet1%{_isa} = %{version}-%{release}
 %endif
 
 %changelog
+* Mon Jul 25 2022 zouzhimin  <zouzhimin@kylinos.cn> - 1.20-1
+- update to 1.20-1
+
 * Wed Aug 04 2021 Liu Yinsi <liuyinsi@163.com> - 1.13-3
 - fix format-truncation to support gcc 10
 
 * Sat Jul 18 2020 yanan li <liyanan032@huawei.com> - 1.13-2
 - Package init
+