Index: codex-rs/core/src/tools/handlers/multi_agents_common.rs
--- codex-rs/core/src/tools/handlers/multi_agents_common.rs.orig
+++ codex-rs/core/src/tools/handlers/multi_agents_common.rs
@@ -265,6 +265,7 @@ pub(crate) fn apply_spawn_agent_runtime_overrides(
             FunctionCallError::RespondToModel(format!("approval_policy is invalid: {err}"))
         })?;
     config.permissions.shell_environment_policy = turn.shell_environment_policy.clone();
+    config.codex_self_exe = turn.codex_self_exe.clone();
     config.codex_linux_sandbox_exe = turn.codex_linux_sandbox_exe.clone();
     config.cwd = turn.cwd.clone();
     config
