diff --git a/misc/userscripts/format_json b/misc/userscripts/format_json
index 0d476b327..610cefbac 100755
--- a/misc/userscripts/format_json
+++ b/misc/userscripts/format_json
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 set -euo pipefail
 #
 # Behavior: