diff --git a/codex-rs/features/src/lib.rs b/codex-rs/features/src/lib.rs
index 6c4e97ab73..38c209df4a 100644
--- a/codex-rs/features/src/lib.rs
+++ b/codex-rs/features/src/lib.rs
@@ -845,8 +845,8 @@ pub const FEATURES: &[FeatureSpec] = &[
     FeatureSpec {
         id: Feature::UnavailableDummyTools,
         key: "unavailable_dummy_tools",
-        stage: Stage::UnderDevelopment,
-        default_enabled: false,
+        stage: Stage::Stable,
+        default_enabled: true,
     },
     FeatureSpec {
         id: Feature::ToolSuggest,
diff --git a/codex-rs/features/src/tests.rs b/codex-rs/features/src/tests.rs
index 69d51a740e..8249198e3b 100644
--- a/codex-rs/features/src/tests.rs
+++ b/codex-rs/features/src/tests.rs
@@ -142,15 +142,6 @@ fn browser_controls_are_stable_and_enabled_by_default() {
     assert_eq!(feature_for_key("computer_use"), Some(Feature::ComputerUse));
 }
 
-#[test]
-fn unavailable_dummy_tools_is_under_development_and_disabled_by_default() {
-    assert_eq!(
-        Feature::UnavailableDummyTools.stage(),
-        Stage::UnderDevelopment
-    );
-    assert_eq!(Feature::UnavailableDummyTools.default_enabled(), false);
-}
-
 #[test]
 fn general_analytics_is_stable_and_enabled_by_default() {
     assert_eq!(Feature::GeneralAnalytics.stage(), Stage::Stable);