diff --git a/studio/backend/hub/utils/download_registry.py b/studio/backend/hub/utils/download_registry.py
index e459562f98..5e1d241aa6 100644
--- a/studio/backend/hub/utils/download_registry.py
+++ b/studio/backend/hub/utils/download_registry.py
@@ -1046,7 +1046,11 @@ def _resumable_blob_hashes(entry: Path) -> set[str]:
 
 
 def _manifest_hash_split(
-    repo_type: str, repo_id: str, variant: Optional[str], *, root: Optional[Path] = None
+    repo_type: str,
+    repo_id: str,
+    variant: Optional[str],
+    *,
+    root: Optional[Path] = None,
 ) -> tuple[set[str], set[str]]:
     """``(main, companion)`` blob hashes from the variant's manifest, split the way the worker
     splits them when it asks for a purge. Empty pair when either step cannot answer, which
diff --git a/studio/backend/tests/test_partial_resume_verdict.py b/studio/backend/tests/test_partial_resume_verdict.py
index 6ff4f8b6d8..18b5476e5c 100644
--- a/studio/backend/tests/test_partial_resume_verdict.py
+++ b/studio/backend/tests/test_partial_resume_verdict.py
@@ -261,7 +261,12 @@ def two_roots(monkeypatch, tmp_path):
     return active / "models--Org--Model", previous / "models--Org--Model"
 
 
-def _record_in(entry: Path, transport: str, variant, blob: str = BLOB):
+def _record_in(
+    entry: Path,
+    transport: str,
+    variant,
+    blob: str = BLOB,
+):
     download_manifest.write_manifest(
         "model",
         "Org/Model",