diff --git a/elasticsearch/license/licensor/bin/key-pair-generator b/elasticsearch/license/licensor/bin/key-pair-generator
index 7c6308673fa..08785726269 100755
--- a/elasticsearch/license/licensor/bin/key-pair-generator
+++ b/elasticsearch/license/licensor/bin/key-pair-generator
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 # or more contributor license agreements. Licensed under the Elastic License;
diff --git a/elasticsearch/license/licensor/bin/license-generator b/elasticsearch/license/licensor/bin/license-generator
index d51ac254ee1..15410bb5a0c 100755
--- a/elasticsearch/license/licensor/bin/license-generator
+++ b/elasticsearch/license/licensor/bin/license-generator
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 # or more contributor license agreements. Licensed under the Elastic License;
diff --git a/elasticsearch/license/licensor/bin/verify-license b/elasticsearch/license/licensor/bin/verify-license
index 49762803123..16a12e6089c 100755
--- a/elasticsearch/license/licensor/bin/verify-license
+++ b/elasticsearch/license/licensor/bin/verify-license
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 # or more contributor license agreements. Licensed under the Elastic License;
diff --git a/elasticsearch/x-pack/bin/x-pack/extension b/elasticsearch/x-pack/bin/x-pack/extension
index 56405637625..db00c964d8b 100755
--- a/elasticsearch/x-pack/bin/x-pack/extension
+++ b/elasticsearch/x-pack/bin/x-pack/extension
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 # or more contributor license agreements. Licensed under the Elastic License;
diff --git a/elasticsearch/x-pack/shield/bin/x-pack/syskeygen b/elasticsearch/x-pack/shield/bin/x-pack/syskeygen
index 0d31e25136a..2c9d2a0766c 100755
--- a/elasticsearch/x-pack/shield/bin/x-pack/syskeygen
+++ b/elasticsearch/x-pack/shield/bin/x-pack/syskeygen
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 # or more contributor license agreements. Licensed under the Elastic License;
diff --git a/elasticsearch/x-pack/shield/bin/x-pack/users b/elasticsearch/x-pack/shield/bin/x-pack/users
index b8f3af686e4..67c9f150272 100755
--- a/elasticsearch/x-pack/shield/bin/x-pack/users
+++ b/elasticsearch/x-pack/shield/bin/x-pack/users
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 # or more contributor license agreements. Licensed under the Elastic License;
diff --git a/elasticsearch/x-pack/watcher/bin/x-pack/croneval b/elasticsearch/x-pack/watcher/bin/x-pack/croneval
index d1caefe2a7c..edfe1041755 100755
--- a/elasticsearch/x-pack/watcher/bin/x-pack/croneval
+++ b/elasticsearch/x-pack/watcher/bin/x-pack/croneval
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 # or more contributor license agreements. Licensed under the Elastic License;