diff --git a/scripts/build-docs b/scripts/build-docs
index a2d02fbb..acf85f2e 100755
--- a/scripts/build-docs
+++ b/scripts/build-docs
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/bash
 
 set -o nounset
 set -o errexit