diff --git a/documentation/bump_versions.sh b/documentation/bump_versions.sh
index 6201119a77..03e698faac 100755
--- a/documentation/bump_versions.sh
+++ b/documentation/bump_versions.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # this takes two args: platform release version and wallet release version.
 # it then uses sed to bump them in the three book.toml files.
 #