diff --git a/VERSION b/VERSION
index ac2cdeb..1ef72cb 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.3
+2.1.4-dev
diff --git a/xos/synchronizer/models/volt.xproto b/xos/synchronizer/models/volt.xproto
index 1db42e4..cd398d8 100644
--- a/xos/synchronizer/models/volt.xproto
+++ b/xos/synchronizer/models/volt.xproto
@@ -27,6 +27,7 @@
     optional int32 port = 5 [help_text = "Device port", db_index = False];
     optional string mac_address = 6 [help_text = "Device mac address", db_index = False];
 
+    optional string serial_number = 9 [help_text = "Serial Number", db_index = False, feedback_state = True];
     optional string device_id = 10 [help_text = "Device ID", db_index = False, feedback_state = True];
     optional string admin_state = 11 [help_text = "admin_state", db_index = False, feedback_state = True];
     optional string oper_status = 12 [help_text = "oper_status", db_index = False, feedback_state = True];
diff --git a/xos/synchronizer/pull_steps/pull_olts.py b/xos/synchronizer/pull_steps/pull_olts.py
index 0f3c199..6c57cde 100644
--- a/xos/synchronizer/pull_steps/pull_olts.py
+++ b/xos/synchronizer/pull_steps/pull_olts.py
@@ -129,6 +129,7 @@
             model.device_id = olt["id"]
             model.admin_state = olt["admin_state"]
             model.oper_status = olt["oper_status"]
+            model.serial_number = olt['serial_number']
 
             model.volt_service = self.volt_service
             model.volt_service_id = self.volt_service.id
diff --git a/xos/synchronizer/pull_steps/test_pull_olts.py b/xos/synchronizer/pull_steps/test_pull_olts.py
index fd09a1f..a06d3ff 100644
--- a/xos/synchronizer/pull_steps/test_pull_olts.py
+++ b/xos/synchronizer/pull_steps/test_pull_olts.py
@@ -89,7 +89,8 @@
                     "type": "simulated_olt",
                     "host_and_port": "172.17.0.1:50060",
                     "admin_state": "ENABLED",
-                    "oper_status": "ACTIVE"
+                    "oper_status": "ACTIVE",
+                    "serial_number": "serial_number",
                 }
             ]
         }
diff --git a/xos/synchronizer/steps/sync_olt_device.py b/xos/synchronizer/steps/sync_olt_device.py
index 301f123..1140173 100644
--- a/xos/synchronizer/steps/sync_olt_device.py
+++ b/xos/synchronizer/steps/sync_olt_device.py
@@ -84,7 +84,9 @@
             raise Exception(
                 'VOLTHA Device Id is empty. This probably means that the OLT device is already provisioned in VOLTHA')
         else:
-            model.device_id = res['id'];
+            model.device_id = res['id']
+            model.serial_number = res['serial_number']
+
 
         return model
 
diff --git a/xos/synchronizer/steps/test_sync_olt_device.py b/xos/synchronizer/steps/test_sync_olt_device.py
index dd3f249..3b7e6cb 100644
--- a/xos/synchronizer/steps/test_sync_olt_device.py
+++ b/xos/synchronizer/steps/test_sync_olt_device.py
@@ -122,6 +122,8 @@
 
         self.o = o
 
+        self.voltha_devices_response = {"id": "123", "serial_number": "foobar"}
+
     def tearDown(self):
         self.o = None
         sys.path = self.sys_path_save
@@ -172,7 +174,7 @@
         """
         Should print an error if device.enable fails
         """
-        m.post("http://voltha_url:1234/api/v1/devices", status_code=200, json={"id": "123"})
+        m.post("http://voltha_url:1234/api/v1/devices", status_code=200, json=self.voltha_devices_response)
         m.post("http://voltha_url:1234/api/v1/devices/123/enable", status_code=500, text="EnableError")
 
         with self.assertRaises(Exception) as e:
@@ -191,7 +193,7 @@
             "host_and_port": "%s:%s" % (self.o.host, self.o.port)
         }
 
-        m.post("http://voltha_url:1234/api/v1/devices", status_code=200, json={"id": "123"}, additional_matcher=functools.partial(match_json, expected_conf))
+        m.post("http://voltha_url:1234/api/v1/devices", status_code=200, json=self.voltha_devices_response, additional_matcher=functools.partial(match_json, expected_conf))
         m.post("http://voltha_url:1234/api/v1/devices/123/enable", status_code=200)
         m.get("http://voltha_url:1234/api/v1/devices/123", json={"oper_status": "ACTIVE", "admin_state": "ENABLED"})
         logical_devices = {
@@ -247,7 +249,7 @@
         m.post("http://onos:4321/onos/v1/network/configuration/", status_code=200, json=onos_expected_conf,
                additional_matcher=functools.partial(match_json, onos_expected_conf))
 
-        m.post("http://voltha_url:1234/api/v1/devices", status_code=200, json={"id": "123"},
+        m.post("http://voltha_url:1234/api/v1/devices", status_code=200, json=self.voltha_devices_response,
                additional_matcher=functools.partial(match_json, expected_conf))
         m.post("http://voltha_url:1234/api/v1/devices/123/enable", status_code=200)
         m.get("http://voltha_url:1234/api/v1/devices/123", json={"oper_status": "ACTIVE", "admin_state": "ENABLED"})
@@ -276,7 +278,7 @@
             "host_and_port": "%s:%s" % (self.o.host, self.o.port)
         }
 
-        m.post("http://voltha_url:1234/api/v1/devices", status_code=200, json={"id": "123"},
+        m.post("http://voltha_url:1234/api/v1/devices", status_code=200, json=self.voltha_devices_response,
                additional_matcher=functools.partial(match_json, expected_conf))
         m.post("http://voltha_url:1234/api/v1/devices/123/enable", status_code=200)
         m.get("http://voltha_url:1234/api/v1/devices/123", [