diff --git a/tools/appliance/definitions/systemvm64template/postinstall.sh b/tools/appliance/definitions/systemvm64template/postinstall.sh
index 5ce0163aa5f..80cedc0738b 100644
--- a/tools/appliance/definitions/systemvm64template/postinstall.sh
+++ b/tools/appliance/definitions/systemvm64template/postinstall.sh
@@ -61,7 +61,7 @@ install_packages() {
   apt-get --no-install-recommends -q -y --force-yes install xl2tpd bcrelay ppp ipsec-tools tdb-tools
   echo "openswan openswan/install_x509_certificate boolean false" | debconf-set-selections
   echo "openswan openswan/install_x509_certificate seen true" | debconf-set-selections
-  apt-get --no-install-recommends -q -y --force-yes install openswan
+  apt-get --no-install-recommends -q -y --force-yes install openswan=1:2.6.37-3
 
   # xenstore utils
   apt-get --no-install-recommends -q -y --force-yes install xenstore-utils libxenstore3.0
diff --git a/tools/appliance/definitions/systemvmtemplate/postinstall.sh b/tools/appliance/definitions/systemvmtemplate/postinstall.sh
index 822cd5f517a..81d4f86849a 100644
--- a/tools/appliance/definitions/systemvmtemplate/postinstall.sh
+++ b/tools/appliance/definitions/systemvmtemplate/postinstall.sh
@@ -57,7 +57,7 @@ install_packages() {
   apt-get --no-install-recommends -q -y --force-yes install xl2tpd bcrelay ppp ipsec-tools tdb-tools
   echo "openswan openswan/install_x509_certificate boolean false" | debconf-set-selections
   echo "openswan openswan/install_x509_certificate seen true" | debconf-set-selections
-  apt-get --no-install-recommends -q -y --force-yes install openswan
+  apt-get --no-install-recommends -q -y --force-yes install openswan=1:2.6.37-3
 
   # xenstore utils
   apt-get --no-install-recommends -q -y --force-yes install xenstore-utils libxenstore3.0