diff --git a/src/langbot/pkg/persistence/alembic/versions/0017_oss_workspace_identity.py b/src/langbot/pkg/persistence/alembic/versions/0017_oss_workspace_identity.py
index 5574c96c1..105f529be 100644
--- a/src/langbot/pkg/persistence/alembic/versions/0017_oss_workspace_identity.py
+++ b/src/langbot/pkg/persistence/alembic/versions/0017_oss_workspace_identity.py
@@ -67,10 +67,7 @@ def _suspend_postgres_rls(
     states: dict[str, tuple[bool, bool]] = {}
     for table_name in table_names:
         row = conn.execute(
-            sa.text(
-                'SELECT relrowsecurity, relforcerowsecurity '
-                'FROM pg_class WHERE oid = to_regclass(:table_name)'
-            ),
+            sa.text('SELECT relrowsecurity, relforcerowsecurity FROM pg_class WHERE oid = to_regclass(:table_name)'),
             {'table_name': table_name},
         ).one()
         enabled, forced = bool(row.relrowsecurity), bool(row.relforcerowsecurity)
@@ -141,18 +138,11 @@ def upgrade() -> None:
             if table_name == 'workspaces':
                 continue
             table = sa.Table(table_name, metadata, autoload_with=conn, extend_existing=True)
-            conn.execute(
-                table.update()
-                .where(table.c.workspace_uuid == old_uuid)
-                .values(workspace_uuid=canonical_uuid)
-            )
+            conn.execute(table.update().where(table.c.workspace_uuid == old_uuid).values(workspace_uuid=canonical_uuid))
 
         if 'metadata' in table_names:
             conn.execute(
-                sa.text(
-                    'UPDATE metadata SET value = :canonical_uuid '
-                    'WHERE key = :key AND value = :old_uuid'
-                ),
+                sa.text('UPDATE metadata SET value = :canonical_uuid WHERE key = :key AND value = :old_uuid'),
                 {
                     'canonical_uuid': canonical_uuid,
                     'key': _OSS_WORKSPACE_METADATA_KEY,
diff --git a/src/langbot/pkg/telemetry/identity.py b/src/langbot/pkg/telemetry/identity.py
index 8385ce190..a1320f1d4 100644
--- a/src/langbot/pkg/telemetry/identity.py
+++ b/src/langbot/pkg/telemetry/identity.py
@@ -12,5 +12,5 @@ def workspace_identity(execution_context: WorkspaceExecutionContext) -> dict[str
     """Build the canonical telemetry identity for one Workspace execution."""
     workspace_uuid = execution_context.workspace_uuid.strip()
     if not workspace_uuid:
-        raise ValueError("Telemetry execution Workspace UUID is empty")
-    return {"workspace_uuid": workspace_uuid}
+        raise ValueError('Telemetry execution Workspace UUID is empty')
+    return {'workspace_uuid': workspace_uuid}
diff --git a/src/langbot/pkg/workspace/identity.py b/src/langbot/pkg/workspace/identity.py
index 8500be798..e307d4c06 100644
--- a/src/langbot/pkg/workspace/identity.py
+++ b/src/langbot/pkg/workspace/identity.py
@@ -3,15 +3,15 @@ from __future__ import annotations
 import uuid
 
 
-_INSTANCE_PREFIX = "instance_"
-_WORKSPACE_IDENTITY_NAMESPACE = uuid.UUID("8ea04f29-8528-4cc3-bb28-30a838c89d76")
+_INSTANCE_PREFIX = 'instance_'
+_WORKSPACE_IDENTITY_NAMESPACE = uuid.UUID('8ea04f29-8528-4cc3-bb28-30a838c89d76')
 
 
 def workspace_uuid_from_instance_id(instance_id: str) -> str:
     """Return the stable OSS Workspace UUID for a persisted instance identity."""
     value = instance_id.strip()
     if not value:
-        raise ValueError("LangBot instance identity is empty")
+        raise ValueError('LangBot instance identity is empty')
 
     candidate = value[len(_INSTANCE_PREFIX) :] if value.startswith(_INSTANCE_PREFIX) else value
     try: