diff --git a/version_bump.sh b/version_bump.sh
index aaccf339..27d92a83 100755
--- a/version_bump.sh
+++ b/version_bump.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 set -e
 
 if [ "$1" == "patch" ]; then