diff --git a/fetchmail-6.4.22.tar.xz b/fetchmail-6.4.22.tar.xz
deleted file mode 100644
index 34e8e96..0000000
Binary files a/fetchmail-6.4.22.tar.xz and /dev/null differ
diff --git a/fetchmail-6.4.22.tar.xz.asc b/fetchmail-6.4.22.tar.xz.asc
deleted file mode 100644
index 05cc2ae..0000000
--- a/fetchmail-6.4.22.tar.xz.asc
+++ /dev/null
@@ -1,16 +0,0 @@
------BEGIN PGP SIGNATURE-----
-
-iQIzBAABCgAdFiEE3EplW9mTzUhx+oIQ5BKxVu/zhVoFAmE/vEgACgkQ5BKxVu/z
-hVqlTA//bMqmPdUfYjm6VYSy3n2v+arXSp1t3G3rKuWGUXsxu6w8YmTNgd7y+3b8
-k5owzg60FOHYaG2icX+2DYfZlprWdsz8sI1fZRUH5xxe4ozAPg0iPbvSLiXqBNI8
-uxewWTOt1pCSYQptaWF32wqZvcHtnHU0nEEEy0u3n1UG9vEbDoh7Ej9Z0TpvwnhA
-54tU8vDV/sQdS+XN/DuWYfXp6cqrNg6P/eGUb877i+E2YoFsoqHrZV0A27IMTxOn
-qTi0upysu0QyMRQo1Xd6zwjs7MyPudZ9pMoeXGu+wnFW6g8dDsnTx/SBh27sgssh
-SwTnKYANztgDCGH2ySrLgX0QxseI8Y7JPNbfQDS3pkpPx5TQuO+aDQcQhXhzG94o
-oez7/aUmSvAIbPKiF8Y1SQMoRms5iSNVJL8LyQNLOSDZziKT+fGzDVJhnNh3Jcn9
-Pbj5oMYkcd8YKcjZYRXlwK4rbdcvA/79b3TuFMmcZ7eiTJHiy7i/C7R9qrYyxXao
-c6ZmRjNuAYpL0TnFhIy/yUe/+mhse87a4I2XTk1CE1Z1RpNI4xPDHO+7EtSyTZDV
-1rBs9tA2B7t/WcXVQxZDF4MqJ02TWZRwCgxRJGCMG7d28xvZaxpuZrZ9jlosQHt4
-jEgoWvcboCCK0WOZlnpgtKwvd8SRoPoDxLJmnKc35r1dqsP4Aso=
-=Qd4Q
------END PGP SIGNATURE-----
diff --git a/fetchmail-6.4.30.tar.xz b/fetchmail-6.4.30.tar.xz
new file mode 100644
index 0000000..ffd8282
Binary files /dev/null and b/fetchmail-6.4.30.tar.xz differ
diff --git a/fetchmail-6.4.30.tar.xz.asc b/fetchmail-6.4.30.tar.xz.asc
new file mode 100644
index 0000000..eec89f0
--- /dev/null
+++ b/fetchmail-6.4.30.tar.xz.asc
@@ -0,0 +1,16 @@
+-----BEGIN PGP SIGNATURE-----
+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+=ralo
+-----END PGP SIGNATURE-----
diff --git a/fetchmail.spec b/fetchmail.spec
index 6664f8d..77c6e7a 100644
--- a/fetchmail.spec
+++ b/fetchmail.spec
@@ -1,14 +1,19 @@
-Summary:             A remote mail retrieval and forwarding utility
-Name:                fetchmail
-Version:             6.4.22
-Release:             1
-URL:                 http://www.fetchmail.info/
-License:             GPL+ and Public Domain
-Source0:             https://sourceforge.net/projects/%{name}/files/branch_6.4/%{name}-%{version}.tar.xz
-Source1:             https://sourceforge.net/projects/%{name}/files/branch_6.4/%{name}-%{version}.tar.xz.asc
-Source2:             fetchmail.service
-Source3:             fetchmailrc.example
-BuildRequires:       gcc gettext-devel krb5-devel openssl-devel systemd python3-devel
+Summary: 	     A remote mail retrieval and forwarding utility
+Name: 		     fetchmail
+Version: 	     6.4.30
+Release: 	     1
+Source0: 	     http://downloads.sourceforge.net/%{name}/%{name}-%{version}.tar.xz
+Source1: 	     http://downloads.sourceforge.net/%{name}/%{name}-%{version}.tar.xz.asc
+# systemd service file
+Source2: 	     fetchmail.service
+# example configuration file
+Source3: 	     fetchmailrc.example
+URL: http://www.fetchmail.info/
+# For a breakdown of the licensing, see COPYING
+License: 	     GPLv2+ and Public Domain
+BuildRequires: 	     gcc gettext-devel krb5-devel openssl-devel systemd python3-devel
+BuildRequires: 	     make
+
 %description
 Fetchmail is a remote mail retrieval and forwarding utility intended
 for use over on-demand TCP/IP links, like SLIP or PPP connections.
@@ -16,6 +21,7 @@ Fetchmail supports every remote-mail protocol currently in use on the
 Internet (POP2, POP3, RPOP, APOP, KPOP, all IMAPs, ESMTP ETRN, IPv6,
 and IPSEC) for retrieval. Then Fetchmail forwards the mail through
 SMTP so you can read it through your favorite mail client.
+
 Install fetchmail if you need to retrieve mail over SLIP or PPP
 connections.
 
@@ -31,14 +37,21 @@ make
 
 %install
 make install DESTDIR=$RPM_BUILD_ROOT
+
+# install example systemd unit
 mkdir -p $RPM_BUILD_ROOT%{_unitdir}
 install -p -m 644 %{SOURCE2} $RPM_BUILD_ROOT%{_unitdir}/fetchmail.service
+
+# install example config file
 mkdir -p $RPM_BUILD_ROOT%{_sysconfdir}
 install -p -m 600 %{SOURCE3} $RPM_BUILD_ROOT%{_sysconfdir}/fetchmailrc.example
+
+# remove fetchmailconf stuff
 rm -f $RPM_BUILD_ROOT%{_bindir}/fetchmailconf*
 rm -f $RPM_BUILD_ROOT%{_mandir}/man1/fetchmailconf.1*
 rm -f $RPM_BUILD_ROOT%{python3_sitelib}/fetchmailconf.py*
 rm -f $RPM_BUILD_ROOT%{python3_sitelib}/__pycache__/fetchmailconf*
+
 %find_lang %name
 
 %files -f %{name}.lang
@@ -49,6 +62,9 @@ rm -f $RPM_BUILD_ROOT%{python3_sitelib}/__pycache__/fetchmailconf*
 %config(noreplace) %attr(0600, mail, mail) %{_sysconfdir}/fetchmailrc.example
 
 %changelog
+* Thu Jun 23 2022 tanyulong <tanyulong@kylinos.cn> - 6.4.30-1
+- Update upstream version to 6.4.30
+
 * Tue Sep 14 2021 yaoxin <yaoxin30@huawei.com> - 6.4.22-1
 - Update to 6.4.22 for fix CVE-2021-39272