diff --git a/codex-rs/ext/extension-api/src/approval_review_request.rs b/codex-rs/ext/extension-api/src/approval_review_request.rs
index fac5b6ea0c..88a27a42b6 100644
--- a/codex-rs/ext/extension-api/src/approval_review_request.rs
+++ b/codex-rs/ext/extension-api/src/approval_review_request.rs
@@ -1,3 +1,4 @@
+#[cfg(unix)]
 use codex_protocol::approvals::GuardianCommandSource;
 use codex_protocol::approvals::NetworkApprovalProtocol;
 use codex_protocol::models::AdditionalPermissionProfile;