diff --git a/homeassistant/components/mqtt/util.py b/homeassistant/components/mqtt/util.py
index 97fa616fdd1..27bdb4f2a35 100644
--- a/homeassistant/components/mqtt/util.py
+++ b/homeassistant/components/mqtt/util.py
@@ -36,7 +36,7 @@ from .const import (
 )
 from .models import DATA_MQTT, DATA_MQTT_AVAILABLE, ReceiveMessage
 
-AVAILABILITY_TIMEOUT = 30.0
+AVAILABILITY_TIMEOUT = 50.0
 
 TEMP_DIR_NAME = f"home-assistant-{DOMAIN}"