diff --git a/extras/vpnupgrade_alpine.sh b/extras/vpnupgrade_alpine.sh
index e2ae32b..08ac278 100755
--- a/extras/vpnupgrade_alpine.sh
+++ b/extras/vpnupgrade_alpine.sh
@@ -69,7 +69,7 @@ EOF
 }
 
 get_swan_ver() {
-  swan_ver_cur=4.14
+  swan_ver_cur=4.15
   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 1aecea3..5e7ca7e 100755
--- a/extras/vpnupgrade_amzn.sh
+++ b/extras/vpnupgrade_amzn.sh
@@ -52,7 +52,7 @@ EOF
 }
 
 get_swan_ver() {
-  swan_ver_cur=4.14
+  swan_ver_cur=4.15
   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 489f49c..6c8feb4 100755
--- a/extras/vpnupgrade_centos.sh
+++ b/extras/vpnupgrade_centos.sh
@@ -85,7 +85,7 @@ EOF
 }
 
 get_swan_ver() {
-  swan_ver_cur=4.14
+  swan_ver_cur=4.15
   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 ccd371f..24a88d2 100755
--- a/extras/vpnupgrade_ubuntu.sh
+++ b/extras/vpnupgrade_ubuntu.sh
@@ -80,7 +80,7 @@ EOF
 }
 
 get_swan_ver() {
-  swan_ver_cur=4.14
+  swan_ver_cur=4.15
   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)