diff --git a/personal_data/fetchers/wanikani_lessons.py b/personal_data/fetchers/wanikani_lessons.py
index 198adfa..909293f 100644
--- a/personal_data/fetchers/wanikani_lessons.py
+++ b/personal_data/fetchers/wanikani_lessons.py
@@ -13,9 +13,10 @@ logger = logging.getLogger(__name__)
 
 URL_API_ROOT = 'https://api.wanikani.com/v2'
 URL_ASSIGNMENTS = URL_API_ROOT + '/assignments'
-URL_SUMMARY  = URL_API_ROOT + '/summary'
+URL_SUMMARY = URL_API_ROOT + '/summary'
 URL_SUBJECTS = URL_API_ROOT + '/subjects/{subject_id}'
 
+
 def _setup_cache(session):
     requests_util.setup_limiter(
         session,
@@ -63,6 +64,7 @@ class WaniKaniLessonsFetcher(Scraper):
                 yield data_item
             url = json_resp.get('pages', {}).get('next_url')
 
+
 @dataclasses.dataclass(frozen=True)
 class WaniKaniSummaryFetcher(Scraper):
     dataset_name: str = 'wanikani_summary'