diff --git a/extras/vpnupgrade_alpine.sh b/extras/vpnupgrade_alpine.sh
index ef1ed31..5601e8d 100755
--- a/extras/vpnupgrade_alpine.sh
+++ b/extras/vpnupgrade_alpine.sh
@@ -69,7 +69,7 @@ EOF
 }
 
 get_swan_ver() {
-  swan_ver_cur=5.1
+  swan_ver_cur=5.2
   base_url="https://github.com/hwdsl2/vpn-extras/releases/download/v1.0.0"
   swan_ver_url="$base_url/upg-v1-$os_type-$os_ver-swanver"
   swan_ver_latest=$(wget -t 2 -T 10 -qO- "$swan_ver_url" | head -n 1)
diff --git a/extras/vpnupgrade_amzn.sh b/extras/vpnupgrade_amzn.sh
index 441abfd..60c6202 100755
--- a/extras/vpnupgrade_amzn.sh
+++ b/extras/vpnupgrade_amzn.sh
@@ -5,7 +5,7 @@
 # The latest version of this script is available at:
 # https://github.com/hwdsl2/setup-ipsec-vpn
 #
-# Copyright (C) 2020-2024 Lin Song <linsongui@gmail.com>
+# Copyright (C) 2020-2025 Lin Song <linsongui@gmail.com>
 #
 # This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
 # Unported License: http://creativecommons.org/licenses/by-sa/3.0/
@@ -52,7 +52,7 @@ EOF
 }
 
 get_swan_ver() {
-  swan_ver_cur=5.1
+  swan_ver_cur=5.2
   base_url="https://github.com/hwdsl2/vpn-extras/releases/download/v1.0.0"
   swan_ver_url="$base_url/upg-v1-amzn-2-swanver"
   swan_ver_latest=$(wget -t 2 -T 10 -qO- "$swan_ver_url" | head -n 1)
diff --git a/extras/vpnupgrade_centos.sh b/extras/vpnupgrade_centos.sh
index 76d0813..870006a 100755
--- a/extras/vpnupgrade_centos.sh
+++ b/extras/vpnupgrade_centos.sh
@@ -5,7 +5,7 @@
 # The latest version of this script is available at:
 # https://github.com/hwdsl2/setup-ipsec-vpn
 #
-# Copyright (C) 2016-2024 Lin Song <linsongui@gmail.com>
+# Copyright (C) 2016-2025 Lin Song <linsongui@gmail.com>
 #
 # This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
 # Unported License: http://creativecommons.org/licenses/by-sa/3.0/
@@ -86,7 +86,7 @@ EOF
 }
 
 get_swan_ver() {
-  swan_ver_cur=5.1
+  swan_ver_cur=5.2
   base_url="https://github.com/hwdsl2/vpn-extras/releases/download/v1.0.0"
   swan_ver_url="$base_url/upg-v1-$os_type-$os_ver-swanver"
   swan_ver_latest=$(wget -t 2 -T 10 -qO- "$swan_ver_url" | head -n 1)
diff --git a/extras/vpnupgrade_ubuntu.sh b/extras/vpnupgrade_ubuntu.sh
index 4b67140..4e74371 100755
--- a/extras/vpnupgrade_ubuntu.sh
+++ b/extras/vpnupgrade_ubuntu.sh
@@ -5,7 +5,7 @@
 # The latest version of this script is available at:
 # https://github.com/hwdsl2/setup-ipsec-vpn
 #
-# Copyright (C) 2016-2024 Lin Song <linsongui@gmail.com>
+# Copyright (C) 2016-2025 Lin Song <linsongui@gmail.com>
 #
 # This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
 # Unported License: http://creativecommons.org/licenses/by-sa/3.0/
@@ -88,7 +88,7 @@ EOF
 }
 
 get_swan_ver() {
-  swan_ver_cur=5.1
+  swan_ver_cur=5.2
   base_url="https://github.com/hwdsl2/vpn-extras/releases/download/v1.0.0"
   swan_ver_url="$base_url/upg-v1-$os_type-$os_ver-swanver"
   swan_ver_latest=$(wget -t 2 -T 10 -qO- "$swan_ver_url" | head -n 1)