diff --git a/ovpn-cert-expiration.sh b/ovpn-cert-expiration.sh
index fc75703..3a53bcb 100644
--- a/ovpn-cert-expiration.sh
+++ b/ovpn-cert-expiration.sh
@@ -1,4 +1,4 @@
-#! /bin/bash
+#!/usr/bin/env bash
 
 # DESCRIPTION:
 #   checking openvpn server certificates expiration
diff --git a/ovpn-client-management.sh b/ovpn-client-management.sh
index 1159274..fa9b9da 100644
--- a/ovpn-client-management.sh
+++ b/ovpn-client-management.sh
@@ -1,4 +1,4 @@
-#! /bin/bash
+#!/usr/bin/env bash
 
 # DESCRIPTION:
 #   creating or deleting client config for openvpn
diff --git a/ovpn-connect-handling.sh b/ovpn-connect-handling.sh
index 96e05e4..0904ea9 100644
--- a/ovpn-connect-handling.sh
+++ b/ovpn-connect-handling.sh
@@ -1,4 +1,4 @@
-#! /bin/bash
+#!/usr/bin/env bash
 
 # DESCRIPTION:
 #   handling client connection