diff --git a/services/cache.py b/services/cache.py
index 27082770..216dd1b4 100644
--- a/services/cache.py
+++ b/services/cache.py
@@ -160,7 +160,7 @@ async def get_cached_author_followers(author_id: int):
         .all()
     )
 
-    await redis.execute("SET", rkey, json.dumps(followers))
+    await redis.execute("SET", rkey, json.dumps([x for x in followers]))
 
     followers_objects = []
     for follower_id in followers:
@@ -193,7 +193,7 @@ async def get_cached_topic_followers(topic_id: int):
     )
     followers_objects = []
     if followers:
-        await redis.execute("SET", rkey, json.dumps(followers))
+        await redis.execute("SET", rkey, json.dumps([x for x in followers]))
 
         for follower_id in followers:
             follower_str = await redis.execute("GET", f"author:id:{follower_id}")