diff --git a/gateway_addon/ipc.py b/gateway_addon/ipc.py
index 3c4c473..e54040a 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...')
@@ -102,7 +102,7 @@ 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.
 
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(