diff --git a/gateway_addon/device.py b/gateway_addon/device.py
index 32546ca..8402df3 100644
--- a/gateway_addon/device.py
+++ b/gateway_addon/device.py
@@ -186,7 +186,7 @@ def connected_notify(self, connected):
         """
         self.adapter.manager_proxy.send_connected_notification(self, connected)
 
-    def set_property(self, property_name, value):
+    def set_property(self, property_name, value, meta):
         """
         Set a property value.
 
@@ -197,7 +197,7 @@ def set_property(self, property_name, value):
         if not prop:
             return
 
-        prop.set_value(value)
+        prop.set_value(value, meta)
 
     def request_action(self, action_id, action_name, action_input):
         """
diff --git a/gateway_addon/ipc.py b/gateway_addon/ipc.py
index 3c4c473..dc4ce16 100644
--- a/gateway_addon/ipc.py
+++ b/gateway_addon/ipc.py
@@ -86,7 +86,7 @@ def __init__(self, plugin_id, on_message, verbose=False):
         while not self.registered:
             time.sleep(0.01)
 
-    def on_open(self):
+    def on_open(self, _):
         """Event handler for WebSocket opening."""
         if self.verbose:
             print('IpcClient: Connected to server, registering...')
@@ -102,13 +102,16 @@ def on_open(self):
             print('IpcClient: Failed to send message: {}'.format(e))
             return
 
-    def on_message(self, message):
+    def on_message(self, _, message):
         """
         Event handler for WebSocket messages.
 
         message -- the received message
         """
         try:
+            if os.path.exists('/boot/firmware/developer.txt'):
+                print('gateway_addon: on_message: \n' + str(message))
+            
             resp = json.loads(message)
 
             self.validator.validate({'message': resp})
diff --git a/gateway_addon/property.py b/gateway_addon/property.py
index 353445b..b0809fc 100644
--- a/gateway_addon/property.py
+++ b/gateway_addon/property.py
@@ -122,7 +122,7 @@ def get_value(self):
         """
         return self.value
 
-    def set_value(self, value):
+    def set_value(self, value, meta):
         """
         Set the current value of the property.
 
diff --git a/requirements.txt b/requirements.txt
index 30058f1..7d0e591 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 jsonschema==3.2.0
 singleton-decorator==1.0.0
-websocket-client==0.57.0
+websocket-client==1.5.0
diff --git a/setup.py b/setup.py
index 7a246aa..0db397e 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
 requirements = [
     'jsonschema==3.2.0',
     'singleton-decorator==1.0.0',
-    'websocket-client==0.57.0',
+    'websocket-client==1.5.0',
 ]
 
 setup(