diff --git a/acore/settings/base.py b/acore/settings/base.py
index a951b70..429361d 100644
--- a/acore/settings/base.py
+++ b/acore/settings/base.py
@@ -170,7 +170,7 @@ LANGUAGES = [
     ('en', 'English'),
 ]
 LOCALE_PATHS = [BASE_DIR / 'locale']
-TIME_ZONE = 'Europe/Kiev'
+TIME_ZONE = 'Europe/Kyiv'
 USE_I18N = True
 USE_TZ = True
 
diff --git a/apps/mattermost_connector/management/commands/update_users_timezone.py b/apps/mattermost_connector/management/commands/update_users_timezone.py
index e6e02f0..60b6e5c 100755
--- a/apps/mattermost_connector/management/commands/update_users_timezone.py
+++ b/apps/mattermost_connector/management/commands/update_users_timezone.py
@@ -12,7 +12,7 @@ logger = logging.getLogger(__name__)
 
 
 class Command(BaseCommand):
-    help = 'Обновить часовой пояс для всех пользователей Mattermost на Europe/Kiev'
+    help = 'Обновить часовой пояс для всех пользователей Mattermost на Europe/Kyiv'
 
     def add_arguments(self, parser):
         parser.add_argument(
@@ -28,8 +28,8 @@ class Command(BaseCommand):
         parser.add_argument(
             '--timezone',
             type=str,
-            default='Europe/Kiev',
-            help='Часовой пояс для установки (по умолчанию: Europe/Kiev)',
+            default='Europe/Kyiv',
+            help='Часовой пояс для установки (по умолчанию: Europe/Kyiv)',
         )
 
     def handle(self, *args, **options):
diff --git a/apps/mattermost_connector/mattermost_service.py b/apps/mattermost_connector/mattermost_service.py
index 43230f2..20eef46 100755
--- a/apps/mattermost_connector/mattermost_service.py
+++ b/apps/mattermost_connector/mattermost_service.py
@@ -168,7 +168,7 @@ class MattermostService:
                 "user_id": user_id,
                 "category": "timezone",
                 "name": "manualTimezone",
-                "value": timezone_data.get('manualTimezone', 'Europe/Kiev')
+                "value": timezone_data.get('manualTimezone', 'Europe/Kyiv')
             },
             {
                 "user_id": user_id,
diff --git a/apps/mattermost_connector/services/sync_service.py b/apps/mattermost_connector/services/sync_service.py
index c890029..f8a3afe 100755
--- a/apps/mattermost_connector/services/sync_service.py
+++ b/apps/mattermost_connector/services/sync_service.py
@@ -128,7 +128,7 @@ def sync_employee(employee: Employee, password: Optional[str] = None) -> bool:
             try:
                 timezone_data = {
                     'useAutomaticTimezone': 'false',
-                    'manualTimezone': 'Europe/Kiev',
+                    'manualTimezone': 'Europe/Kyiv',
                     'automaticTimezone': ''
                 }
                 service.update_user_preferences(mm_data['id'], timezone_data)