diff --git a/README.md b/README.md
index dfedce5..ba86c35 100644
--- a/README.md
+++ b/README.md
@@ -227,6 +227,7 @@ Address = 10.14.14.0/24 # should assign an ip from this cidr manually
 PublicKey = zhrZQg4QdPZs8CajT3r4fmzcNsWpBL9ImQCUsnlXyGM=
 AllowedIPs = 192.168.80.0/20,10.147.223.0/24,10.144.144.0/24
 Endpoint = 0.0.0.0:11013 # should be the public ip of the vpn server
+PersistentKeepalive = 25
 
 connected_clients:
 []
diff --git a/README_CN.md b/README_CN.md
index e36c184..99007ee 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -228,6 +228,7 @@ Address = 10.14.14.0/24 # should assign an ip from this cidr manually
 PublicKey = zhrZQg4QdPZs8CajT3r4fmzcNsWpBL9ImQCUsnlXyGM=
 AllowedIPs = 192.168.80.0/20,10.147.223.0/24,10.144.144.0/24
 Endpoint = 0.0.0.0:11013 # should be the public ip of the vpn server
+PersistentKeepalive = 25
 
 connected_clients:
 []
diff --git a/easytier/src/vpn_portal/wireguard.rs b/easytier/src/vpn_portal/wireguard.rs
index 2423ccd..dccdeda 100644
--- a/easytier/src/vpn_portal/wireguard.rs
+++ b/easytier/src/vpn_portal/wireguard.rs
@@ -284,6 +284,7 @@ Address = {client_cidr} # should assign an ip from this cidr manually
 PublicKey = {my_public_key}
 AllowedIPs = {allow_ips}
 Endpoint = {listenr_addr} # should be the public ip of the vpn server
+PersistentKeepalive = 25
 "#,
             peer_secret_key = BASE64_STANDARD.encode(cfg.peer_secret_key()),
             my_public_key = BASE64_STANDARD.encode(cfg.my_public_key()),