diff --git a/sanic_testing/__init__.py b/sanic_testing/__init__.py
index a17f395..ee1896c 100644
--- a/sanic_testing/__init__.py
+++ b/sanic_testing/__init__.py
@@ -1,4 +1,4 @@
 from sanic_testing.manager import TestManager
 
-__version__ = "0.5.0"
+__version__ = "0.6.0"
 __all__ = ("TestManager",)
diff --git a/sanic_testing/testing.py b/sanic_testing/testing.py
index 0399a40..7604a23 100644
--- a/sanic_testing/testing.py
+++ b/sanic_testing/testing.py
@@ -1,17 +1,18 @@
 import typing
 from functools import partial
+from ipaddress import IPv6Address, ip_address
 from json import JSONDecodeError
-from socket import socket
+from socket import AF_INET6, SOCK_STREAM, socket
 from types import SimpleNamespace
 
 import httpx
-import websockets
 from sanic import Sanic  # type: ignore
 from sanic.asgi import ASGIApp  # type: ignore
 from sanic.exceptions import MethodNotSupported  # type: ignore
 from sanic.log import logger  # type: ignore
 from sanic.request import Request  # type: ignore
 from sanic.response import text  # type: ignore
+from websockets import connect
 
 ASGI_HOST = "mockserver"
 ASGI_PORT = 1234
@@ -76,7 +77,7 @@ async def _local_request(self, method: str, url: str, *args, **kwargs):
 
         if method == "websocket":
             ws_proxy = SimpleNamespace()
-            async with websockets.connect(url, *args, **kwargs) as websocket:
+            async with connect(url, *args, **kwargs) as websocket:
                 ws_proxy.ws = websocket
                 ws_proxy.opened = True
             return ws_proxy
@@ -185,10 +186,22 @@ def _sanic_endpoint_test(
             )
             host, port = host or self.host, self.port
         else:
-            sock = socket()
-            sock.bind((host or self.host, 0))
+            bind = host or self.host
+            ip = ip_address(bind)
+            if isinstance(ip, IPv6Address):
+                sock = socket(AF_INET6, SOCK_STREAM)
+                port = ASGI_PORT
+            else:
+                sock = socket()
+                port = 0
+            sock.bind((bind, port))
             server_kwargs = dict(sock=sock, **server_kwargs)
-            host, port = sock.getsockname()
+
+            if isinstance(ip, IPv6Address):
+                host, port, _, _ = sock.getsockname()
+                host = f"[{host}]"
+            else:
+                host, port = sock.getsockname()
             self.port = port
 
         if uri.startswith(
diff --git a/setup.py b/setup.py
index fcf6890..b9a7b86 100644
--- a/setup.py
+++ b/setup.py
@@ -48,7 +48,7 @@ def open_local(paths, mode="r", encoding="utf8"):
 }
 requirements = [
     "httpx==0.18.*",
-    "websockets>=8.1",
+    "websockets>=9.0",
 ]
 
 tests_require = ["pytest", "sanic==21.3", "pytest-asyncio"]