diff --git a/www/build.sh b/www/build.sh
index 2f221d5..915f0f1 100755
--- a/www/build.sh
+++ b/www/build.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 mkdir data
 (cd src; hy build.hy)
 rm -rf site/html