diff --git a/lib/crates/arc-openai-oauth/src/lib.rs b/lib/crates/arc-openai-oauth/src/lib.rs
index fd7de5bb9..db4155cf8 100644
--- a/lib/crates/arc-openai-oauth/src/lib.rs
+++ b/lib/crates/arc-openai-oauth/src/lib.rs
@@ -77,7 +77,10 @@ pub fn build_authorize_url(
         ("response_type", "code"),
         ("client_id", client_id),
         ("redirect_uri", redirect_uri),
-        ("scope", "openid profile email offline_access"),
+        (
+            "scope",
+            "openid profile email offline_access api.responses.write",
+        ),
         ("code_challenge", &pkce.challenge),
         ("code_challenge_method", "S256"),
         ("state", state),