diff --git a/lib/comfycamp_web/controllers/oauth_json.ex b/lib/comfycamp_web/controllers/oauth_json.ex
index 722da83..ba24278 100644
--- a/lib/comfycamp_web/controllers/oauth_json.ex
+++ b/lib/comfycamp_web/controllers/oauth_json.ex
@@ -15,6 +15,7 @@ defmodule ComfycampWeb.OauthJSON do
       token_endpoint: "https://comfycamp.space/oauth/token",
       userinfo_endpoint: "https://comfycamp.space/oauth/userinfo",
       jwks_uri: "https://comfycamp.space/.well-known/jwks.json",
+      subject_types_supported: ["public"],
       response_types_supported: ["code"],
       id_token_signing_alg_values_supported: ["HS256"],
       scopes_supported: ["openid", "profile", "email"],