diff --git a/redis/client.py b/redis/client.py
index b526d7787b..cb91c7a088 100755
--- a/redis/client.py
+++ b/redis/client.py
@@ -1100,7 +1100,7 @@ def handle_message(self, response, ignore_subscribe_messages=False):
 
     def run_in_thread(
         self,
-        sleep_time: int = 0,
+        sleep_time: float = 0.0,
         daemon: bool = False,
         exception_handler: Optional[Callable] = None,
     ) -> "PubSubWorkerThread":