diff --git a/examples/check_creations.sh b/examples/check_creations.sh
index e1a976d73..7e8fd4d6e 100755
--- a/examples/check_creations.sh
+++ b/examples/check_creations.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 KEY_ENCODED=$1
 SCRIPT=$(realpath "$0")
diff --git a/examples/delay_check.sh b/examples/delay_check.sh
index 1af3b79c1..c4d063223 100755
--- a/examples/delay_check.sh
+++ b/examples/delay_check.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 ping -q -c 2 8.8.8.8 | tail -1 | awk -F "/" '{print $5}'
 ping -q -c 2 8.8.8.8 | tail -1 | awk -F "/" '{print $5}'
diff --git a/javascript/packages/orchestrator/zombie-wrapper.sh b/javascript/packages/orchestrator/zombie-wrapper.sh
index 610e7d0a1..68b2f6565 100755
--- a/javascript/packages/orchestrator/zombie-wrapper.sh
+++ b/javascript/packages/orchestrator/zombie-wrapper.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -uxo pipefail
 
 if [ -f /cfg/coreutils ]; then
@@ -17,6 +17,7 @@ else
     LS="ls"
     KILL="kill"
     SLEEP="sleep"
+    ECHO="echo"
     CAT="cat"
 fi
 
diff --git a/scripts/ci/run-test-env-manager.sh b/scripts/ci/run-test-env-manager.sh
index 67c875ac5..960b247ff 100755
--- a/scripts/ci/run-test-env-manager.sh
+++ b/scripts/ci/run-test-env-manager.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Based on https://gitlab.parity.io/parity/simnet/-/blob/master/scripts/ci/run-test-environment-manager-v2.sh
 
diff --git a/scripts/ci/run-test-local-env-manager.sh b/scripts/ci/run-test-local-env-manager.sh
index 1d32cca09..ab9e724a1 100755
--- a/scripts/ci/run-test-local-env-manager.sh
+++ b/scripts/ci/run-test-local-env-manager.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Based on https://gitlab.parity.io/parity/simnet/-/blob/master/scripts/ci/run-test-environment-manager-v2.sh
 
diff --git a/tests/chaos/delay_check.sh b/tests/chaos/delay_check.sh
index 2bda452f1..61083f04d 100755
--- a/tests/chaos/delay_check.sh
+++ b/tests/chaos/delay_check.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 POD=$1
 PORT=$2 # 9615 for prometheus
diff --git a/tests/k8s/downloadPolkadot.sh b/tests/k8s/downloadPolkadot.sh
index 25b2f66a0..b3e54862e 100644
--- a/tests/k8s/downloadPolkadot.sh
+++ b/tests/k8s/downloadPolkadot.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -euxo pipefail