diff --git a/lib/charms/mongos/v0/mongos_client_interface.py b/lib/charms/mongos/v0/mongos_client_interface.py
index c99938df..6b25f6a0 100644
--- a/lib/charms/mongos/v0/mongos_client_interface.py
+++ b/lib/charms/mongos/v0/mongos_client_interface.py
@@ -7,11 +7,13 @@
 shards.
 """
 import logging
+from ops.framework import Object
+from ops.charm import CharmBase
+from charms.data_platform_libs.v0.data_interfaces import (
+    DatabaseProvides,
+)
 
-from charms.data_platform_libs.v0.data_interfaces import DatabaseProvides
 from charms.mongodb.v1.mongos import MongosConfiguration
-from ops.charm import CharmBase
-from ops.framework import Object
 
 logger = logging.getLogger(__name__)
 DATABASE_KEY = "database"
diff --git a/lib/charms/mongos/v0/set_status.py b/lib/charms/mongos/v0/set_status.py
index bc5b4b9b..4f17fdfe 100644
--- a/lib/charms/mongos/v0/set_status.py
+++ b/lib/charms/mongos/v0/set_status.py
@@ -7,6 +7,7 @@
 from ops.framework import Object
 from ops.model import StatusBase
 
+
 # The unique Charmhub library identifier, never change it
 LIBID = "0713372afa0841359edbb777273ecdbf"