diff --git a/ci/install_cargo_web.sh b/ci/install_cargo_web.sh
index b35f06919..bf09f5a61 100755
--- a/ci/install_cargo_web.sh
+++ b/ci/install_cargo_web.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -euo pipefail
 IFS=$'\n\t'
diff --git a/ci/run_tests.sh b/ci/run_tests.sh
index a43a44609..b5832022d 100755
--- a/ci/run_tests.sh
+++ b/ci/run_tests.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Originally this ci script borrowed from https://github.com/koute/stdweb
 # because both use `cargo-web` tool to check the compilation.
diff --git a/examples/build_all.sh b/examples/build_all.sh
index 2fab36cd4..01c384f26 100755
--- a/examples/build_all.sh
+++ b/examples/build_all.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 PID=-1
 
 function ctrl_c() {