diff --git a/hack/populate_secrets.sh b/hack/populate_secrets.sh
index c398be7266..1a2cd74a4e 100755
--- a/hack/populate_secrets.sh
+++ b/hack/populate_secrets.sh
@@ -1,4 +1,5 @@
-#!/bin/sh
+#!/usr/bin/env nix-shell
+#!nix-shell -p bash -i bash
 
 set -eu