diff --git a/sendmail.spec b/sendmail.spec
index a54ddf9602f73afa06e7eff6a2a09b78a30571fa..08f09b5776a651691e08d92020659cd6dc5c1df1 100644
--- a/sendmail.spec
+++ b/sendmail.spec
@@ -1,6 +1,6 @@
 Name:          sendmail
 Version:       8.18.1
-Release:       1
+Release:       2
 Summary:       A classic mail transfer agent from the Unix world
 License:       Sendmail
 URL:           http://www.sendmail.org/
@@ -344,7 +344,7 @@ if [ ! -f %{_sysconfdir}/pki/tls/certs/sendmail.pem ]; then
     fi
 
     %{_bindir}/openssl req -new -key %{_sysconfdir}/pki/tls/private/sendmail.key -x509 -sha256 \
-        -days 730 -set_serial $RANDOM -out %{_sysconfdir}/pki/tls/certs/sendmail.pem \
+        -days 2190 -set_serial $RANDOM -out %{_sysconfdir}/pki/tls/certs/sendmail.pem \
         -subj "/C=--/ST=SomeState/L=SomeCity/O=SomeOrganization/OU=SomeOrganizationalUnit/CN=${FQDN}/emailAddress=root@${FQDN}"
     chmod 600 %{_sysconfdir}/pki/tls/certs/sendmail.pem
 fi
@@ -469,6 +469,12 @@ exit 0
 
 
 %changelog
+* Wed Feb 12 2025 xinghe <xinghe2@h-partners.com> - 8.18.1-2
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC:extending the certificate validate period
+
 * Mon Sep 23 2024 liweigang <liweigang.lwg@gmail.com> - 8.18.1-1
 - Type: requirements
 - ID: NA