diff --git a/entrypoint.sh b/entrypoint.sh
index 406f03f..cd038f2 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 set -eu
 
diff --git a/index.js b/index.js
index b70f3e0..1e1c097 100644
--- a/index.js
+++ b/index.js
@@ -24,7 +24,7 @@ const exec = (cmd, args=[]) => new Promise((resolve, reject) => {
 });
 
 const main = async () => {
-    await exec('bash', [path.join(__dirname, './entrypoint.sh')]);
+    await exec('sh', [path.join(__dirname, './entrypoint.sh')]);
 };
 
 main().catch(err => {