diff --git a/games/views/session.py b/games/views/session.py
index ea01fa2..3fa7724 100644
--- a/games/views/session.py
+++ b/games/views/session.py
@@ -49,16 +49,12 @@ class SessionRowData(TypedDict):
     cell_data: list[Node]
 
 
-def session_row_data(
-    session: Session, device_list, csrf_token: str
-) -> SessionRowData:
+def session_row_data(session: Session, device_list, csrf_token: str) -> SessionRowData:
     """Canonical session-list row. Single source of truth shared by
     list_sessions and the htmx finish/reset fragments."""
     row_selector = f"#session-row-{session.pk}"
     end_url = reverse("games:list_sessions_end_session", args=[session.pk])
-    reset_url = reverse(
-        "games:list_sessions_reset_session_start", args=[session.pk]
-    )
+    reset_url = reverse("games:list_sessions_reset_session_start", args=[session.pk])
     actions = ButtonGroup(
         [
             {
@@ -202,8 +198,7 @@ def list_sessions(request: HttpRequest, search_string: str = "") -> HttpResponse
             "Actions",
         ],
         "rows": [
-            session_row_data(session, device_list, csrf_token)
-            for session in sessions
+            session_row_data(session, device_list, csrf_token) for session in sessions
         ],
     }
     content = paginated_table_content(
@@ -313,9 +308,7 @@ def _row_with_navbar(request: HttpRequest, session: Session) -> HttpResponse:
     counts = model_counts(request)
     fragment = Fragment(
         session_row(session, device_list, get_token(request)),
-        NavbarPlaytime(
-            counts["today_played"], counts["last_7_played"], oob=True
-        ),
+        NavbarPlaytime(counts["today_played"], counts["last_7_played"], oob=True),
     )
     return HttpResponse(str(fragment))
 
diff --git a/tests/test_rendered_pages.py b/tests/test_rendered_pages.py
index 9912f7b..89668d6 100644
--- a/tests/test_rendered_pages.py
+++ b/tests/test_rendered_pages.py
@@ -130,7 +130,7 @@ class RenderedPagesTest(TestCase):
         self.assertIn("submit_and_redirect", html)
         self.assertIn("Submit & Create Purchase", html)  # & correctly escaped
         self.assertIn("submit_and_create_session", html)
-        self.assertIn("Submit & Create Session", html)   # & correctly escaped
+        self.assertIn("Submit & Create Session", html)  # & correctly escaped
         # Fields self-style: label + control carry their own classes (no #add-form
         # / form CSS in input.css).
         self.assertIn("mb-2.5 text-sm font-medium text-heading", html)  # _LABEL_CLASS
diff --git a/tests/test_session_endpoints.py b/tests/test_session_endpoints.py
index 555de40..ccc84be 100644
--- a/tests/test_session_endpoints.py
+++ b/tests/test_session_endpoints.py
@@ -38,9 +38,7 @@ def test_reset_session_start_htmx_returns_row_no_refresh_header(
     auth_client, running_session
 ):
     original_start = running_session.timestamp_start
-    url = reverse(
-        "games:list_sessions_reset_session_start", args=[running_session.pk]
-    )
+    url = reverse("games:list_sessions_reset_session_start", args=[running_session.pk])
     response = auth_client.get(url, HTTP_HX_REQUEST="true")
     body = response.content.decode()
     assert response.status_code == 200