diff --git a/pyinfra/queue/queue_manager.py b/pyinfra/queue/queue_manager.py
index c12be9f..c51ce70 100644
--- a/pyinfra/queue/queue_manager.py
+++ b/pyinfra/queue/queue_manager.py
@@ -21,7 +21,7 @@ def get_connection_params(config: Config) -> pika.ConnectionParameters:
         "host": config.rabbitmq_host,
         "port": config.rabbitmq_port,
         "credentials": credentials,
-        "heartbeat": config.rabbitmq_heartbeat,
+        "heartbeat": int(config.rabbitmq_heartbeat),
     }
 
     return pika.ConnectionParameters(**pika_connection_params)