diff --git a/codex-rs/core/src/codex.rs b/codex-rs/core/src/codex.rs
index 8524dbbec5..57716399d4 100644
--- a/codex-rs/core/src/codex.rs
+++ b/codex-rs/core/src/codex.rs
@@ -2831,7 +2831,7 @@ mod tests {
             sandbox_policy: config.sandbox_policy.clone(),
             cwd: config.cwd.clone(),
             original_config_do_not_use: Arc::clone(&config),
-            exec_policy: Arc::new(ExecPolicy::empty()),
+            exec_policy: Arc::new(RwLock::new(ExecPolicy::empty())),
             session_source: SessionSource::Exec,
         };
 
@@ -2912,7 +2912,7 @@ mod tests {
             sandbox_policy: config.sandbox_policy.clone(),
             cwd: config.cwd.clone(),
             original_config_do_not_use: Arc::clone(&config),
-            exec_policy: Arc::new(ExecPolicy::empty()),
+            exec_policy: Arc::new(RwLock::new(ExecPolicy::empty())),
             session_source: SessionSource::Exec,
         };