diff --git a/config/mosquitto.conf b/config/mosquitto.conf
index 8d1c653..d54b293 100644
--- a/config/mosquitto.conf
+++ b/config/mosquitto.conf
@@ -41,3 +41,5 @@ log_timestamp_format %Y-%m-%dT%H:%M:%S
 # messages waiting when the connection is re-established (they will all be sent immediately). This should not be
 # 0 on a production system (but the value chosen should take into account likely queue sizes and bandwidth)
 max_queued_messages 0
+
+persistent_client_expiration 10m