diff --git a/bemani/frontend/jubeat/jubeat.py b/bemani/frontend/jubeat/jubeat.py
index 5ee6ec0..1cd0ff4 100644
--- a/bemani/frontend/jubeat/jubeat.py
+++ b/bemani/frontend/jubeat/jubeat.py
@@ -161,7 +161,7 @@ class JubeatFrontend(FrontendBase):
             profile.get_dict("last").get_int_array("emblem", 5)
         )
         formatted_profile["owned_emblems"] = [
-            ach.id for ach in achievements if ach.type == "emblem"
+            str(ach.id) for ach in achievements if ach.type == "emblem"
         ]
         formatted_profile["jubility"] = (
             profile.get_int("jubility")