diff --git a/bin/nix-build-and-cache b/bin/nix-build-and-cache
index 5b22b854..42c37709 100755
--- a/bin/nix-build-and-cache
+++ b/bin/nix-build-and-cache
@@ -1,4 +1,4 @@
-#!/usr/bin/env sh
+#!/usr/bin/env bash
 
 set -euo pipefail