diff --git a/06.PVE制作DNS服务器.md b/06.PVE制作DNS服务器.md
index 6b402e9..72501db 100644
--- a/06.PVE制作DNS服务器.md
+++ b/06.PVE制作DNS服务器.md
@@ -430,6 +430,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=1024
+max-cache-ttl=14400
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/
 
diff --git a/07.PVE制作TS服务器.md b/07.PVE制作TS服务器.md
index ae98e1b..68d32a3 100644
--- a/07.PVE制作TS服务器.md
+++ b/07.PVE制作TS服务器.md
@@ -512,6 +512,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=1024
+max-cache-ttl=14400
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/
 
diff --git a/src/debian/debian_dns_dnsmasq.conf b/src/debian/debian_dns_dnsmasq.conf
index 55438e0..134f822 100644
--- a/src/debian/debian_dns_dnsmasq.conf
+++ b/src/debian/debian_dns_dnsmasq.conf
@@ -10,6 +10,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=1024
+max-cache-ttl=14400
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/
 
diff --git a/src/debian/debian_ts_dnsmasq.conf b/src/debian/debian_ts_dnsmasq.conf
index 3c6ce71..25c9e58 100644
--- a/src/debian/debian_ts_dnsmasq.conf
+++ b/src/debian/debian_ts_dnsmasq.conf
@@ -10,6 +10,7 @@ log-facility=/var/log/dnsmasq.log
 log-async=20
 
 cache-size=1024
+max-cache-ttl=14400
 edns-packet-max=1232
 rebind-domain-ok=/fox.home.arpa/