diff --git a/codex-rs/core/src/features.rs b/codex-rs/core/src/features.rs
index 4b8370039..a011884fc 100644
--- a/codex-rs/core/src/features.rs
+++ b/codex-rs/core/src/features.rs
@@ -339,12 +339,6 @@ pub const FEATURES: &[FeatureSpec] = &[
         stage: Stage::Experimental,
         default_enabled: false,
     },
-    FeatureSpec {
-        id: Feature::ParallelToolCalls,
-        key: "parallel",
-        stage: Stage::Experimental,
-        default_enabled: false,
-    },
     FeatureSpec {
         id: Feature::Skills,
         key: "skills",