diff --git a/build.sh b/build.sh
index 1b8fe88cc..73cd81177 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 yarn babel --extensions .ts,.tsx --quiet -d ./build/server ./server
 yarn babel --extensions .ts,.tsx --quiet -d ./build/shared ./shared