diff --git a/claudetool/codereview/update_tests.sh b/claudetool/codereview/update_tests.sh
index 324f28a..2d75df4 100755
--- a/claudetool/codereview/update_tests.sh
+++ b/claudetool/codereview/update_tests.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 CURRENT_DIR=$(pwd)