diff --git a/extras/vpnupgrade.sh b/extras/vpnupgrade.sh
index f014161..9b81ea1 100644
--- a/extras/vpnupgrade.sh
+++ b/extras/vpnupgrade.sh
@@ -11,7 +11,7 @@
 # know how you have improved it!
 
 # Check https://libreswan.org for the latest version
-swan_ver=3.17
+swan_ver=3.18
 
 ### Do not edit below this line ###
 
diff --git a/extras/vpnupgrade_centos.sh b/extras/vpnupgrade_centos.sh
index 4ba6337..9632230 100644
--- a/extras/vpnupgrade_centos.sh
+++ b/extras/vpnupgrade_centos.sh
@@ -11,7 +11,7 @@
 # know how you have improved it!
 
 # Check https://libreswan.org for the latest version
-swan_ver=3.17
+swan_ver=3.18
 
 ### Do not edit below this line ###
 
diff --git a/vpnsetup.sh b/vpnsetup.sh
index 6ff35ae..0051e80 100755
--- a/vpnsetup.sh
+++ b/vpnsetup.sh
@@ -150,7 +150,7 @@ apt-get -yq install ppp xl2tpd || exiterr2
 apt-get -yq install fail2ban || exiterr2
 
 # Compile and install Libreswan
-swan_ver=3.17
+swan_ver=3.18
 swan_file="libreswan-$swan_ver.tar.gz"
 swan_url1="https://download.libreswan.org/$swan_file"
 swan_url2="https://github.com/libreswan/libreswan/archive/v$swan_ver.tar.gz"
diff --git a/vpnsetup_centos.sh b/vpnsetup_centos.sh
index be7ee10..3e85a93 100755
--- a/vpnsetup_centos.sh
+++ b/vpnsetup_centos.sh
@@ -147,7 +147,7 @@ elif grep -qs "release 7" /etc/redhat-release; then
 fi
 
 # Compile and install Libreswan
-swan_ver=3.17
+swan_ver=3.18
 swan_file="libreswan-$swan_ver.tar.gz"
 swan_url1="https://download.libreswan.org/$swan_file"
 swan_url2="https://github.com/libreswan/libreswan/archive/v$swan_ver.tar.gz"