diff --git a/resolvers/author.py b/resolvers/author.py
index 743a7aac..771e3de9 100644
--- a/resolvers/author.py
+++ b/resolvers/author.py
@@ -192,7 +192,7 @@ async def get_author_follows(_, _info, slug="", user=None, author_id=0):
                     logger.debug(f"getting {author_id} follows authors")
                     cached = await redis.execute("GET", rkey)
                     if not cached:
-                        authors = author_follows_authors(author_id) # type: ignore
+                        authors = author_follows_authors(author_id)  # type: ignore
                         prepared = [author.dict() for author in authors]
                         await redis.execute(
                             "SET", rkey, json.dumps(prepared, cls=CustomJSONEncoder)
@@ -205,7 +205,7 @@ async def get_author_follows(_, _info, slug="", user=None, author_id=0):
                     if cached and isinstance(cached, str):
                         topics = json.loads(cached)
                     if not cached:
-                        topics = author_follows_topics(author_id) # type: ignore
+                        topics = author_follows_topics(author_id)  # type: ignore
                         prepared = [topic.dict() for topic in topics]
                         await redis.execute(
                             "SET", rkey, json.dumps(prepared, cls=CustomJSONEncoder)
diff --git a/resolvers/follower.py b/resolvers/follower.py
index c826e4e4..18b69026 100644
--- a/resolvers/follower.py
+++ b/resolvers/follower.py
@@ -61,7 +61,7 @@ async def follow(_, info, what, slug):
             if isinstance(author_dict, dict):
                 author_id = author_dict.get("id")
                 if author_id:
-                    follows_ids = [a.get('id') for a in follows]
+                    follows_ids = [a.get("id") for a in follows]
                     if author_id not in follows_ids:
                         await cache_author(follower_dict)
                         await notify_follower(follower_dict, author_id, "follow")
diff --git a/services/cache.py b/services/cache.py
index 710a7c60..fd1f3bd8 100644
--- a/services/cache.py
+++ b/services/cache.py
@@ -149,7 +149,8 @@ async def cache_topic(topic_dict: dict):
             # topic not found in the list, so add the new topic with the updated stat field
             follower_follows_topics.append(topic_dict)
 
-        await redis.execute('SET',
+        await redis.execute(
+            "SET",
             "SET",
             f"author:{follower_id}:follows-topics",
             json.dumps(follower_follows_topics),
diff --git a/services/triggers.py b/services/triggers.py
index 70e0c353..e7c27039 100644
--- a/services/triggers.py
+++ b/services/triggers.py
@@ -116,28 +116,28 @@ def after_author_update(_mapper, _connection, author: Author):
 def after_topic_follower_insert(_mapper, _connection, target: TopicFollower):
     logger.info(target)
     asyncio.create_task(
-        handle_topic_follower_change(target.topic, target.follower, True) # type: ignore
+        handle_topic_follower_change(target.topic, target.follower, True)  # type: ignore
     )
 
 
 def after_topic_follower_delete(_mapper, _connection, target: TopicFollower):
     logger.info(target)
     asyncio.create_task(
-        handle_topic_follower_change(target.topic, target.follower, False) # type: ignore
+        handle_topic_follower_change(target.topic, target.follower, False)  # type: ignore
     )
 
 
 def after_author_follower_insert(_mapper, _connection, target: AuthorFollower):
     logger.info(target)
     asyncio.create_task(
-        handle_author_follower_change(target.author, target.follower, True) # type: ignore
+        handle_author_follower_change(target.author, target.follower, True)  # type: ignore
     )
 
 
 def after_author_follower_delete(_mapper, _connection, target: AuthorFollower):
     logger.info(target)
     asyncio.create_task(
-        handle_author_follower_change(target.author, target.follower, False) # type: ignore
+        handle_author_follower_change(target.author, target.follower, False)  # type: ignore
     )