diff --git a/src/socketio/async_redis_manager.py b/src/socketio/async_redis_manager.py
index b91eeb8..b37e905 100644
--- a/src/socketio/async_redis_manager.py
+++ b/src/socketio/async_redis_manager.py
@@ -20,8 +20,6 @@ except ImportError:  # pragma: no cover
     valkey = None
     ValkeyError = None
 
-
-
 from .async_pubsub_manager import AsyncPubSubManager
 from .redis_manager import parse_redis_sentinel_url
 
@@ -59,7 +57,8 @@ class AsyncRedisManager(AsyncPubSubManager):  # pragma: no cover
                  write_only=False, logger=None, redis_options=None):
         if aioredis is None and valkey is None:
             raise RuntimeError('Redis package is not installed '
-                               '(Run "pip install redis" or "pip install valkey" '
+                               '(Run "pip install redis" or '
+                               '"pip install valkey" '
                                'in your virtualenv).')
         if aioredis and not hasattr(aioredis.Redis, 'from_url'):
             raise RuntimeError('Version 2 of aioredis package is required.')
@@ -74,12 +73,14 @@ class AsyncRedisManager(AsyncPubSubManager):  # pragma: no cover
         if schema == 'redis':
             if aioredis is None or RedisError is None:
                 raise RuntimeError('Redis package is not installed '
-                                   '(Run "pip install redis" in your virtualenv).')
+                                   '(Run "pip install redis" '
+                                   'in your virtualenv).')
             return aioredis, RedisError
         if schema == 'valkey':
             if valkey is None or ValkeyError is None:
                 raise RuntimeError('Valkey package is not installed '
-                                   '(Run "pip install valkey" in your virtualenv).')
+                                   '(Run "pip install valkey" '
+                                   'in your virtualenv).')
             return valkey, ValkeyError
         error_msg = f'Unsupported Redis URL schema: {schema}'
         raise ValueError(error_msg)
diff --git a/src/socketio/redis_manager.py b/src/socketio/redis_manager.py
index a0ef30e..1d0227e 100644
--- a/src/socketio/redis_manager.py
+++ b/src/socketio/redis_manager.py
@@ -82,7 +82,8 @@ class RedisManager(PubSubManager):  # pragma: no cover
                  write_only=False, logger=None, redis_options=None):
         if redis is None and valkey is None:
             raise RuntimeError('Redis package is not installed '
-                               '(Run "pip install redis" or "pip install valkey" '
+                               '(Run "pip install redis" '
+                               'or "pip install valkey" '
                                'in your virtualenv).')
         super().__init__(channel=channel, write_only=write_only, logger=logger)
         self.redis_url = url
@@ -110,12 +111,14 @@ class RedisManager(PubSubManager):  # pragma: no cover
         if schema == 'redis':
             if redis is None or RedisError is None:
                 raise RuntimeError('Redis package is not installed '
-                                   '(Run "pip install redis" in your virtualenv).')
+                                   '(Run "pip install redis" '
+                                   'in your virtualenv).')
             return redis, RedisError
         if schema == 'valkey':
             if valkey is None or ValkeyError is None:
                 raise RuntimeError('Valkey package is not installed '
-                                   '(Run "pip install valkey" in your virtualenv).')
+                                   '(Run "pip install valkey" '
+                                   'in your virtualenv).')
             return valkey, ValkeyError
         error_msg = f'Unsupported Redis URL schema: {schema}'
         raise ValueError(error_msg)