diff --git a/optimism/generate-config.sh b/optimism/generate-config.sh
index e71f8a90ed..3e8dae0221 100755
--- a/optimism/generate-config.sh
+++ b/optimism/generate-config.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -euo pipefail
 
 source rpcs.sh