diff --git a/codex-rs/core/config.schema.json b/codex-rs/core/config.schema.json
index 6b48dcb4a..1e164b24c 100644
--- a/codex-rs/core/config.schema.json
+++ b/codex-rs/core/config.schema.json
@@ -441,7 +441,6 @@
       "type": "object"
     },
     "Notice": {
-      "additionalProperties": false,
       "description": "Settings for notices we display to users via the tui and app-server clients (primarily the Codex IDE extension). NOTE: these are different from notifications - notices are warnings, NUX screens, acknowledgements, etc.",
       "properties": {
         "hide_full_access_warning": {
diff --git a/codex-rs/core/src/config/types.rs b/codex-rs/core/src/config/types.rs
index 96379dfa0..a1d126c11 100644
--- a/codex-rs/core/src/config/types.rs
+++ b/codex-rs/core/src/config/types.rs
@@ -472,7 +472,6 @@ const fn default_true() -> bool {
 /// (primarily the Codex IDE extension). NOTE: these are different from
 /// notifications - notices are warnings, NUX screens, acknowledgements, etc.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Default, JsonSchema)]
-#[schemars(deny_unknown_fields)]
 pub struct Notice {
     /// Tracks whether the user has acknowledged the full access warning prompt.
     pub hide_full_access_warning: Option<bool>,