diff --git a/plugins/nginx-vhosts/dependencies b/plugins/nginx-vhosts/dependencies
index b5e0339c3..5c7393370 100755
--- a/plugins/nginx-vhosts/dependencies
+++ b/plugins/nginx-vhosts/dependencies
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
case "$DOKKU_DISTRO" in
diff --git a/tests/apps/.websocket.disabled/check_deploy b/tests/apps/.websocket.disabled/check_deploy
index e9f31bbd8..3a1dd57ed 100755
--- a/tests/apps/.websocket.disabled/check_deploy
+++ b/tests/apps/.websocket.disabled/check_deploy
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -e; output="$(curl -s -S -i -N -H \"Connection: Upgrade\" -H \"Upgrade: websocket\" -H \"Host: $1\" -H \"Origin: $1\" $1 -m 2)"; echo $output; test "$output" == "bazingaa"
diff --git a/tests/apps/config/check_deploy b/tests/apps/config/check_deploy
index f3d06521a..d21cdf62f 100755
--- a/tests/apps/config/check_deploy
+++ b/tests/apps/config/check_deploy
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -e;
test_url () {
diff --git a/tests/apps/config/post-deploy b/tests/apps/config/post-deploy
index 7b6d5d4f0..04f5a11d5 100755
--- a/tests/apps/config/post-deploy
+++ b/tests/apps/config/post-deploy
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -ex;
REMOTE=$1
diff --git a/tests/apps/dockerfile/check_deploy b/tests/apps/dockerfile/check_deploy
index 784e90fc2..63a809e1f 100755
--- a/tests/apps/dockerfile/check_deploy
+++ b/tests/apps/dockerfile/check_deploy
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -e; output="$(curl -s -S $1)"; echo $output; test "$output" == "Hello World!"
diff --git a/tests/apps/gitsubmodules/check_deploy b/tests/apps/gitsubmodules/check_deploy
index 784e90fc2..63a809e1f 100755
--- a/tests/apps/gitsubmodules/check_deploy
+++ b/tests/apps/gitsubmodules/check_deploy
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -e; output="$(curl -s -S $1)"; echo $output; test "$output" == "Hello World!"
diff --git a/tests/apps/gitsubmodules/pre-commit b/tests/apps/gitsubmodules/pre-commit
index d0cd805b2..7941b56eb 100755
--- a/tests/apps/gitsubmodules/pre-commit
+++ b/tests/apps/gitsubmodules/pre-commit
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
git submodule add https://github.com/heroku/node-js-sample.git node-js-sample
diff --git a/tests/apps/go/check_deploy b/tests/apps/go/check_deploy
index 5bd0d0056..980dc933a 100755
--- a/tests/apps/go/check_deploy
+++ b/tests/apps/go/check_deploy
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -e; test "$(curl -s -S "$1")" == "go"
diff --git a/tests/apps/multi/check_deploy b/tests/apps/multi/check_deploy
index 535b57847..9dfac8577 100755
--- a/tests/apps/multi/check_deploy
+++ b/tests/apps/multi/check_deploy
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -e; curl -s -S "$1" | grep -q "Heroku Multi Buildpack on Dokku"
diff --git a/tests/apps/nodejs-express-noprocfile/check_deploy b/tests/apps/nodejs-express-noprocfile/check_deploy
index 8fb1205dd..1334888e2 100755
--- a/tests/apps/nodejs-express-noprocfile/check_deploy
+++ b/tests/apps/nodejs-express-noprocfile/check_deploy
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -e; output="$(curl -s -S "$1")"; echo "$output"; test "$output" == "nodejs/express"
diff --git a/tests/apps/nodejs-express/check_deploy b/tests/apps/nodejs-express/check_deploy
index 8fb1205dd..1334888e2 100755
--- a/tests/apps/nodejs-express/check_deploy
+++ b/tests/apps/nodejs-express/check_deploy
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -e; output="$(curl -s -S "$1")"; echo "$output"; test "$output" == "nodejs/express"
diff --git a/tests/apps/php/check_deploy b/tests/apps/php/check_deploy
index cf440bd95..2c5af54c7 100755
--- a/tests/apps/php/check_deploy
+++ b/tests/apps/php/check_deploy
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -e; output="$(curl -s -S "$1")"; echo "$output"; test "$output" == "php
"
diff --git a/tests/apps/python-flask/check_deploy b/tests/apps/python-flask/check_deploy
index ccb89fdbc..8c7299cc8 100755
--- a/tests/apps/python-flask/check_deploy
+++ b/tests/apps/python-flask/check_deploy
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -e; output="$(curl -s -S "$1")"; echo "$output"; test "$output" == "python/flask"
diff --git a/tests/apps/static/check_deploy b/tests/apps/static/check_deploy
index 02a24b846..2fea58d2d 100755
--- a/tests/apps/static/check_deploy
+++ b/tests/apps/static/check_deploy
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
set -e; output="$(curl -s -S "$1")"; echo "$output"; test "$output" == "Static Page
"