diff --git a/django_redis/pool.py b/django_redis/pool.py
index 20817992..402d8797 100644
--- a/django_redis/pool.py
+++ b/django_redis/pool.py
@@ -1,5 +1,5 @@
 from typing import Dict
-from urllib.parse import parse_qs, urlparse,urlencode,urlunparse
+from urllib.parse import parse_qs, urlencode, urlparse, urlunparse
 
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
@@ -168,23 +168,20 @@ def get_connection_pool(self, params):
         query_params = parse_qs(url.query)
         is_master = query_params.get("is_master")
         if is_master:
-            cp_params['is_master'] = to_bool(is_master[0])
+            cp_params["is_master"] = to_bool(is_master[0])
         # then remove the "is_master" query string from the URL
         # so it doesn't interfere with the SentinelConnectionPool constructor
-        if 'is_master' in query_params:
-            del query_params['is_master']
+        if "is_master" in query_params:
+            del query_params["is_master"]
         new_query = urlencode(query_params, doseq=True)
 
-        new_url = urlunparse((
-            url.scheme,
-            url.netloc,
-            url.path,
-            url.params,
-            new_query,
-            url.fragment
-        ))
+        new_url = urlunparse(
+            (url.scheme, url.netloc, url.path, url.params, new_query, url.fragment)
+        )
 
-        cp_params.update(service_name=url.hostname, sentinel_manager=self._sentinel,url=new_url)
+        cp_params.update(
+            service_name=url.hostname, sentinel_manager=self._sentinel, url=new_url
+        )
 
         pool = super().get_connection_pool(cp_params)
         return pool