diff --git a/common_lib/services/profile.py b/common_lib/services/profile.py
index fb5285f..b6a4345 100644
--- a/common_lib/services/profile.py
+++ b/common_lib/services/profile.py
@@ -31,9 +31,8 @@ async def get_profiles_by_user_ids(user_ids: List[UUID], token: str, user_id: UU
             response = await client.post(
                 f"{settings.PROFILE_SERVICE}/user_ids/internal",
                 headers={"Authorization": f"Bearer {token}"},
-                json={"user_ids": user_ids,
-                      "user_id": user_id}
-            )
+                json={"user_ids": [str(uid) for uid in user_ids],
+                    "user_id": str(user_id)})
 
             if response.status_code != 200:
                 raise HTTPException(