diff --git a/apicli.py b/apicli.py
index bcce31a..2fa2f2c 100755
--- a/apicli.py
+++ b/apicli.py
@@ -3,7 +3,6 @@
 
 """Command line interface for debugging purpouses."""
 
-
 import logging
 import getpass
 from argparse import ArgumentParser
@@ -14,19 +13,16 @@
 from librouteros import connect
 from librouteros.exceptions import TrapError, FatalError
 
-argParser = ArgumentParser(description='mikrotik api cli interface')
-argParser.add_argument(
-        'host', type=str,
-        help="host to with to connect. may be fqdn, ipv4 or ipv6 address")
-argParser.add_argument('-u', '--user', type=str, required=True, help="username")
-argParser.add_argument(
-        '-p', '--port', type=int, default=8728, help="port to connect to (default 8728)")
+argParser = ArgumentParser(description="mikrotik api cli interface")
+argParser.add_argument("host", type=str, help="host to with to connect. may be fqdn, ipv4 or ipv6 address")
+argParser.add_argument("-u", "--user", type=str, required=True, help="username")
+argParser.add_argument("-p", "--port", type=int, default=8728, help="port to connect to (default 8728)")
 args = argParser.parse_args()
 
-mainlog = logging.getLogger('librouteros')
+mainlog = logging.getLogger("librouteros")
 console = logging.StreamHandler(stdout)
 mainlog.setLevel(logging.DEBUG)
-formatter = logging.Formatter(fmt='%(message)s')
+formatter = logging.Formatter(fmt="%(message)s")
 console.setFormatter(formatter)
 mainlog.addHandler(console)
 
@@ -72,5 +68,5 @@ def main():
             api.close()
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     main()
diff --git a/librouteros/__init__.py b/librouteros/__init__.py
index 1b75086..6cb6bbb 100644
--- a/librouteros/__init__.py
+++ b/librouteros/__init__.py
@@ -14,7 +14,7 @@
 from librouteros.login import (
     plain,
     token,  # noqa: F401 BACK_COMP
-    async_plain
+    async_plain,
 )
 from librouteros.api import Api, AsyncApi
 
diff --git a/librouteros/api.py b/librouteros/api.py
index 15221c7..a2c135a 100644
--- a/librouteros/api.py
+++ b/librouteros/api.py
@@ -137,11 +137,12 @@ def add(self, **kwargs: typing.Any) -> str:
 
     def update(self, **kwargs: typing.Any) -> None:
         tuple(
-              self(
-                  "set",
-                  **kwargs,
-              )
-          )
+            self(
+                "set",
+                **kwargs,
+            )
+        )
+
 
 class AsyncApi:
     def __init__(self, protocol: AsyncApiProtocol):
diff --git a/librouteros/login.py b/librouteros/login.py
index ba3e784..77b97de 100644
--- a/librouteros/login.py
+++ b/librouteros/login.py
@@ -28,5 +28,6 @@ def plain(api: typing.Any, username: str, password: str) -> None:
     """Login using post routeros 6.43 authorization method."""
     tuple(api("/login", **{"name": username, "password": password}))
 
+
 async def async_plain(api, username, password):
-    [response async for response in api("/login", **{"name": username, "password": password})]
\ No newline at end of file
+    [response async for response in api("/login", **{"name": username, "password": password})]
diff --git a/librouteros/protocol.py b/librouteros/protocol.py
index 37d21e3..e0c96a4 100644
--- a/librouteros/protocol.py
+++ b/librouteros/protocol.py
@@ -204,6 +204,7 @@ def readWord(self) -> str:
     def close(self) -> None:
         self.transport.close()
 
+
 class AsyncApiProtocol(Encoder, Decoder):
     def __init__(self, transport: AsyncSocketTransport, encoding: str, timeout: float):
         self.transport = transport
diff --git a/librouteros/query.py b/librouteros/query.py
index ec7f2cc..bac378b 100644
--- a/librouteros/query.py
+++ b/librouteros/query.py
@@ -72,6 +72,7 @@ def Or(left: QueryGen, right: QueryGen, *rest: QueryGen) -> QueryGen:
     yield "?#|"
     yield from ("?#|",) * len(rest)
 
+
 class AsyncQuery:
     def __init__(self, path, keys: typing.Sequence[Key], api):
         self.path = path