diff --git a/README.md b/README.md
index f9ebf6e..fc3e1ce 100644
--- a/README.md
+++ b/README.md
@@ -46,4 +46,4 @@
 
 ## pptp.sh(Deprecated, DO NOT USE)
 
-Copyright (C) 2013-2020 Teddysun <i@teddysun.com>
+Copyright (C) 2013-2021 Teddysun <i@teddysun.com>
diff --git a/wireguard.sh b/wireguard.sh
index 9a60cda..6c3ea27 100644
--- a/wireguard.sh
+++ b/wireguard.sh
@@ -660,6 +660,7 @@ EOF
 PublicKey = ${CLIENT_PUBLIC_KEY}
 AllowedIPs = ${CLIENT_WG_IPV4}/32,${CLIENT_WG_IPV6}/128
 PresharedKey = ${CLIENT_PRE_SHARED_KEY}
+PersistentKeepalive = 25
 EOF
     else
         cat > ${new_client_if} <<EOF
@@ -680,6 +681,7 @@ EOF
 PublicKey = ${CLIENT_PUBLIC_KEY}
 AllowedIPs = ${CLIENT_WG_IPV4}/32
 PresharedKey = ${CLIENT_PRE_SHARED_KEY}
+PersistentKeepalive = 25
 EOF
     fi
     chmod 600 ${new_client_if}