diff --git a/script/deploy.sh b/script/deploy.sh
index 25607843b..bf142cc36 100755
--- a/script/deploy.sh
+++ b/script/deploy.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 set -e
 
 if ([ "$TRAVIS_BRANCH" = "master" ] || [ ! -z "$TRAVIS_TAG" ]) && [ "$TRAVIS_PULL_REQUEST" = "false" ]; then