diff --git a/codex-rs/core/src/config/types.rs b/codex-rs/core/src/config/types.rs
index b7f16a9028..8f5077410e 100644
--- a/codex-rs/core/src/config/types.rs
+++ b/codex-rs/core/src/config/types.rs
@@ -379,6 +379,7 @@ pub struct Notice {
     /// Tracks whether the user has seen the model migration prompt
     pub hide_gpt5_1_migration_prompt: Option<bool>,
     /// Tracks whether the user has seen the gpt-5.1-codex-max migration prompt
+    #[serde(rename = "hide_gpt-5.1-codex-max_migration_prompt")]
     pub hide_gpt_5_1_codex_max_migration_prompt: Option<bool>,
 }