diff --git a/Dockerfile b/Dockerfile
index 42f38e1..fde1876 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10-slim
+FROM python:3.12-slim
 ADD . /code
 WORKDIR /code
 RUN pip install --root-user-action ignore -r requirements.txt
diff --git a/mqtt2log.py b/mqtt2log.py
index 9f4986a..3ced572 100755
--- a/mqtt2log.py
+++ b/mqtt2log.py
@@ -11,9 +11,9 @@ MQTT_PASSWORD = 'mqtt7355@'
 MQTT_TOPIC = 'shellies/events/rpc'
 MQTT_CLIENT_ID = 'MQTT_Logfile_Bridge'
 
-def on_connect(client, userdata, flags, rc):
+def on_connect(client, userdata, flags, reason_code, properties):
     """ The callback for when the client receives a CONNACK response from the server."""
-    print('Connected with result code ' + str(rc))
+    print('Connected with result code ' + reason_code)
     client.subscribe(MQTT_TOPIC)
 
 def _parse_mqtt_message(topic, payload):
@@ -51,7 +51,7 @@ def on_message(client, userdata, msg):
         return
 
 def main():
-    mqtt_client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION1,MQTT_CLIENT_ID)
+    mqtt_client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2,MQTT_CLIENT_ID)
     mqtt_client.username_pw_set(MQTT_USER, MQTT_PASSWORD)
     mqtt_client.on_connect = on_connect
     mqtt_client.on_message = on_message