diff --git a/contrib/completion/bash/docker b/contrib/completion/bash/docker
index b60a4c9fa5..644f811ec4 100644
--- a/contrib/completion/bash/docker
+++ b/contrib/completion/bash/docker
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # bash completion file for core docker commands
 #
diff --git a/docs/reference/builder.md b/docs/reference/builder.md
index 8dfc4d1fb9..8c39b512c8 100644
--- a/docs/reference/builder.md
+++ b/docs/reference/builder.md
@@ -1029,7 +1029,7 @@ the final executable receives the Unix signals by using `exec` and `gosu`
 commands:
 
 ```bash
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 if [ "$1" = 'postgres' ]; then
diff --git a/man/generate.sh b/man/generate.sh
index c97edb440d..905b2d7baf 100755
--- a/man/generate.sh
+++ b/man/generate.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Generate man pages for docker/docker
 #
diff --git a/man/md2man-all.sh b/man/md2man-all.sh
index 97c65c93bc..46c7b8f08e 100755
--- a/man/md2man-all.sh
+++ b/man/md2man-all.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 # get into this script's directory