diff --git a/api/admin.py b/api/admin.py
index 6d73aa6c..8ca5fd3d 100644
--- a/api/admin.py
+++ b/api/admin.py
@@ -47,6 +47,11 @@ async def setup_admin_user(db, username, email):
 
 
 async def main(args):
+    """
+    Create database instance, initialize Beanie to use DB wrapper from
+    `fastapi-users`, and create an initial admin user with unique
+    index on `username` and `email` fields
+    """
     db = Database(args.mongo, args.database)
     await db.initialize_beanie()
     await db.create_indexes()
@@ -64,5 +69,5 @@ async def main(args):
                         help="KernelCI database name")
     parser.add_argument('--email', required=True,
                         help="Admin user email address")
-    args = parser.parse_args()
-    sys.exit(0 if asyncio.run(main(args)) else 1)
+    arguments = parser.parse_args()
+    sys.exit(0 if asyncio.run(main(arguments)) else 1)
diff --git a/api/config.py b/api/config.py
index 1be0ae72..dc7ae282 100644
--- a/api/config.py
+++ b/api/config.py
@@ -8,6 +8,7 @@
 from pydantic import BaseSettings, EmailStr
 
 
+# pylint: disable=too-few-public-methods
 class AuthSettings(BaseSettings):
     """Authentication settings"""
     secret_key: str
@@ -16,6 +17,7 @@ class AuthSettings(BaseSettings):
     access_token_expire_seconds: float = 315360000
 
 
+# pylint: disable=too-few-public-methods
 class PubSubSettings(BaseSettings):
     """Pub/Sub settings loaded from the environment"""
     cloud_events_source: str = "https://api.kernelci.org/"
@@ -24,6 +26,7 @@ class PubSubSettings(BaseSettings):
     keep_alive_period: int = 45
 
 
+# pylint: disable=too-few-public-methods
 class EmailSettings(BaseSettings):
     """Email settings"""
     smtp_host: str
diff --git a/api/email_sender.py b/api/email_sender.py
index 5da61d0f..4e3f3a1e 100644
--- a/api/email_sender.py
+++ b/api/email_sender.py
@@ -15,7 +15,7 @@
 from .config import EmailSettings
 
 
-class EmailSender:
+class EmailSender:  # pylint: disable=too-few-public-methods
     """Class to send email report using SMTP"""
     def __init__(self):
         self._settings = EmailSettings()