diff --git a/core/constraints/twitter.py b/core/constraints/twitter.py
index 862a67f..6211800 100644
--- a/core/constraints/twitter.py
+++ b/core/constraints/twitter.py
@@ -230,7 +230,7 @@ def get_info(self, *args, **kwargs) -> None | dict:
             return None
 
         twitter_username = twitter.username
-        target_ids_list = self.param_values[ConstraintParam.TWITTER_IDS.name]
+        target_ids_list = list(map(str, self.param_values[ConstraintParam.TWITTER_IDS.name]))
 
         rapid_twitter = RapidTwitter()
         res = rapid_twitter.is_following_batch_with_cache(
diff --git a/core/thirdpartyapp/twitter.py b/core/thirdpartyapp/twitter.py
index faf5fc0..6597030 100644
--- a/core/thirdpartyapp/twitter.py
+++ b/core/thirdpartyapp/twitter.py
@@ -223,7 +223,7 @@ def is_following_batch(
             )
             response.raise_for_status()
             data = response.json()
-            followings = set(data.get("ids", []))
+            followings = set(map(str, data.get("ids", [])))
             for id_, is_following in res.items():
                 if is_following:
                     continue
@@ -237,7 +237,7 @@ def is_following_batch(
     def is_following_batch_with_cache(
         self, username: str, target_ids_list: list[str]
     ) -> dict[str:bool]:
-        cache_key = f'{self.get_user_id(username)}-{"-".join(map(str, target_ids_list))}'
+        cache_key = f'{self.get_user_id(username)}-{"-".join(target_ids_list)}'
         res = cache.get(cache_key)
         if res is not None:
             return res