diff --git a/metadata/service/client/cluster.yml b/metadata/service/client/cluster.yml
index d5dadbb..169367b 100644
--- a/metadata/service/client/cluster.yml
+++ b/metadata/service/client/cluster.yml
@@ -1,9 +1,11 @@
 applications:
 - opencontrail
 parameters:
+  _param:
+    opencontrail_version: 2.2
   opencontrail:
     client:
-      version: 2.21
+      version: ${_param:opencontrail_version}
       identity:
         engine: keystone
         host: ${_param:cluster_vip_address}
diff --git a/metadata/service/client/single.yml b/metadata/service/client/single.yml
index a48d2c9..fb9abd7 100644
--- a/metadata/service/client/single.yml
+++ b/metadata/service/client/single.yml
@@ -1,9 +1,11 @@
 applications:
 - opencontrail
 parameters:
+  _param:
+    opencontrail_version: 2.2
   opencontrail:
     client:
-      version: 2.21
+      version: ${_param:opencontrail_version}
       identity:
         engine: keystone
         host: ${_param:cluster_local_address}
diff --git a/metadata/service/tor/single.yml b/metadata/service/tor/single.yml
index 1f44326..7dc070c 100644
--- a/metadata/service/tor/single.yml
+++ b/metadata/service/tor/single.yml
@@ -6,7 +6,7 @@
     opencontrail_tor_agents: 1
   opencontrail:
     common:
-      version: 2.2
+      version: ${_param:opencontrail_version}
       identity:
         engine: keystone
         host: 127.0.0.1