diff --git a/selfprivacy_api/graphql/common_types/user.py b/selfprivacy_api/graphql/common_types/user.py
index 873bca4..7e1852e 100644
--- a/selfprivacy_api/graphql/common_types/user.py
+++ b/selfprivacy_api/graphql/common_types/user.py
@@ -5,12 +5,14 @@ from selfprivacy_api.graphql.mutations.mutation_interface import (
 )
 from enum import Enum
 
+
 @strawberry.enum
 class UserType(Enum):
     NORMAL = "NORMAL"
     PRIMARY = "PRIMARY"
     ROOT = "ROOT"
 
+
 @strawberry.type
 class User:
     """Users management"""
diff --git a/selfprivacy_api/graphql/mutations/ssh_mutations.py b/selfprivacy_api/graphql/mutations/ssh_mutations.py
index 71aaa5d..3eda0e0 100644
--- a/selfprivacy_api/graphql/mutations/ssh_mutations.py
+++ b/selfprivacy_api/graphql/mutations/ssh_mutations.py
@@ -108,7 +108,7 @@ class UserMutations:
                 for key in data["ssh"]["rootKeys"]:
                     if key == input.sshKey:
                         data["ssh"]["rootKeys"].remove(key)
-                        
+
                         return UserMutationReturn(
                             success=True,
                             message="SSH key deleted",
diff --git a/selfprivacy_api/graphql/mutations/users_mutations.py b/selfprivacy_api/graphql/mutations/users_mutations.py
index ad0a380..68242a1 100644
--- a/selfprivacy_api/graphql/mutations/users_mutations.py
+++ b/selfprivacy_api/graphql/mutations/users_mutations.py
@@ -13,6 +13,7 @@ from selfprivacy_api.graphql.mutations.mutation_interface import (
 from selfprivacy_api.utils import WriteUserData, ReadUserData, is_username_forbidden
 from selfprivacy_api.utils import hash_password
 
+
 @strawberry.input
 class UserMutationsInput:
     """Input type for user mutation"""
@@ -128,7 +129,6 @@ class UserMutations:
         """Update user mutation"""
         hashed_password = hash_password(user.password)
 
-
         with WriteUserData() as data:
             ssh_keys = []
             if user.username == data["username"]:
diff --git a/selfprivacy_api/graphql/queries/users.py b/selfprivacy_api/graphql/queries/users.py
index 3073651..3b264eb 100644
--- a/selfprivacy_api/graphql/queries/users.py
+++ b/selfprivacy_api/graphql/queries/users.py
@@ -38,7 +38,7 @@ class Users:
                 for user in data["users"]:
                     if user["username"] == username:
                         user = User(data["username"], data["sshKeys"])
-        
+
         return user
 
     all_users: typing.List[User] = strawberry.field(resolver=get_users)
diff --git a/selfprivacy_api/utils/__init__.py b/selfprivacy_api/utils/__init__.py
index 14a524c..cc93622 100644
--- a/selfprivacy_api/utils/__init__.py
+++ b/selfprivacy_api/utils/__init__.py
@@ -161,7 +161,6 @@ def get_dkim_key(domain):
     return None
 
 
-
 def hash_password(password):
     hashing_command = ["mkpasswd", "-m", "sha-512", password]
     password_hash_process_descriptor = subprocess.Popen(