diff --git a/nats/__init__.py b/nats/__init__.py
index bd000aa8..32d01162 100644
--- a/nats/__init__.py
+++ b/nats/__init__.py
@@ -18,7 +18,8 @@
 
 
 async def connect(
-    servers: Union[List[str]] = ["nats://localhost:4222"], **options
+    servers: Union[str, List[str]] = ["nats://localhost:4222"],
+    **options
 ) -> NATS:
     """
     :param servers: List of servers to connect.