diff --git a/metadata/service/nodes_flat.yml b/metadata/service/nodes_flat.yml
index 9ede4c3..bcfb989 100644
--- a/metadata/service/nodes_flat.yml
+++ b/metadata/service/nodes_flat.yml
@@ -3,6 +3,7 @@
 parameters:
   _param:
     openstack_baremetal_simulator_mac_vendor: "aa:bb:cc"
+    openstack_baremetal_simulator_api_microversion: '1.33'
   ironic:
     client:
       enabled: true
@@ -10,7 +11,7 @@
         admin_identity:
           - name: ${linux:network:hostname}-n0
             driver: pxe_ipmitool
-            microversion: '1.33'
+            microversion: ${_param:openstack_baremetal_simulator_api_microversion}
             properties:
               local_gb: 10
               cpus: 1
@@ -34,7 +35,7 @@
                 volume_type: iqn
           - name: ${linux:network:hostname}-n1
             driver: pxe_ipmitool
-            microversion: '1.33'
+            microversion: ${_param:openstack_baremetal_simulator_api_microversion}
             properties:
               local_gb: 10
               cpus: 1
@@ -62,7 +63,7 @@
                 volume_type: iqn
           - name: ${linux:network:hostname}-n2
             driver: pxe_ipmitool
-            microversion: '1.33'
+            microversion: ${_param:openstack_baremetal_simulator_api_microversion}
             properties:
               local_gb: 10
               cpus: 1
diff --git a/metadata/service/nodes_neutron.yml b/metadata/service/nodes_neutron.yml
index e6f1966..3b92d52 100644
--- a/metadata/service/nodes_neutron.yml
+++ b/metadata/service/nodes_neutron.yml
@@ -3,6 +3,7 @@
 parameters:
   _param:
     openstack_baremetal_simulator_mac_vendor: "aa:bb:cc"
+    openstack_baremetal_simulator_api_microversion: '1.33'
   ironic:
     client:
       enabled: true
@@ -25,20 +26,20 @@
               deploy_kernel: http://${_param:single_baremetal_address}/${baremetal_simulator:deploy_kernel_file}
             network_interface: 'neutron'
             storage_interface: 'cinder'
-            microversion: '1.33'
+            microversion: ${_param:openstack_baremetal_simulator_api_microversion}
             ports:
               - address: "${_param:openstack_baremetal_simulator_mac_vendor}:dd:00:00"
                 local_link_connection:
                   switch_id: 00:00:00:00:00:00
                   switch_info: br-simulator
                   port_id: tap-bmt-n0i1
-                microversion: '1.33'
+                microversion: ${_param:openstack_baremetal_simulator_api_microversion}
               - address: "${_param:openstack_baremetal_simulator_mac_vendor}:dd:00:01"
                 local_link_connection:
                   switch_id: 00:00:00:00:00:00
                   switch_info: br-simulator
                   port_id: tap-bmt-n0i2
-                microversion: '1.33'
+                microversion: ${_param:openstack_baremetal_simulator_api_microversion}
             volume_connectors:
               vc0:
                 name: iqn.2017-05.org.openstack.${linux:network:hostname}-n0-vc0
@@ -60,14 +61,14 @@
               deploy_kernel: http://${_param:single_baremetal_address}/${baremetal_simulator:deploy_kernel_file}
             network_interface: 'neutron'
             storage_interface: 'cinder'
-            microversion: '1.33'
+            microversion: ${_param:openstack_baremetal_simulator_api_microversion}
             ports:
               - address: "${_param:openstack_baremetal_simulator_mac_vendor}:dd:01:00"
                 local_link_connection:
                   switch_id: 00:00:00:00:00:00
                   switch_info: br-simulator
                   port_id: tap-bmt-n1i1
-                microversion: '1.33'
+                microversion: ${_param:openstack_baremetal_simulator_api_microversion}
             deployment_profile:
               network:
                 fixed_ips:
@@ -94,14 +95,14 @@
               deploy_kernel: http://${_param:single_baremetal_address}/${baremetal_simulator:deploy_kernel_file}
             network_interface: 'neutron'
             storage_interface: 'cinder'
-            microversion: '1.33'
+            microversion: ${_param:openstack_baremetal_simulator_api_microversion}
             ports:
               - address: "${_param:openstack_baremetal_simulator_mac_vendor}:dd:02:00"
                 local_link_connection:
                   switch_id: 00:00:00:00:00:00
                   switch_info: br-simulator
                   port_id: tap-bmt-n2i1
-                microversion: '1.33'
+                microversion: ${_param:openstack_baremetal_simulator_api_microversion}
             volume_connectors:
               vc0:
                 name: iqn.2017-05.org.openstack.${linux:network:hostname}-n2-vc0