diff --git a/pomice/pool.py b/pomice/pool.py
index 1db06bf..33d6ecc 100644
--- a/pomice/pool.py
+++ b/pomice/pool.py
@@ -97,7 +97,7 @@ class Node:
             "Authorization": self._password,
             "User-Id": str(self._bot.user.id),
             "Client-Name": f"Pomice/{__version__}",
-            "Num-Shards": getattr(bot, "shards", 1)
+            "Num-Shards": str(getattr(bot, "shards", 1)),
         }
 
         self._players: Dict[int, Player] = {}