diff --git a/compile-all.bash b/compile-all.bash
index f307d35..71fc547 100755
--- a/compile-all.bash
+++ b/compile-all.bash
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/sh
 
 set -euo pipefail
 SRC_DIR="${TYPST_SOURCE_DIR}"