diff --git a/e2e_tests/common_scripts.sh b/e2e_tests/common_scripts.sh
index d79dda5e..95ec04c1 100644
--- a/e2e_tests/common_scripts.sh
+++ b/e2e_tests/common_scripts.sh
@@ -1,12 +1,12 @@
-#!/bin/bash
+#!/bin/sh
 
-function log() {
+log() {
   timestamp=$(date +"%Y-%m-%d %H:%M:%S")
   message="$*"
   echo "$timestamp: $message"
 }
 
-function wait_for_healthz() {
+wait_for_healthz() {
   local healthz_url="$1"
   local timeout_seconds="${2:-30}"  # Default timeout of 30 seconds
   local sleep_between="${3:-1}"  # Default sleep of 1 seconds
diff --git a/e2e_tests/run_e2e_tests.sh b/e2e_tests/run_e2e_tests.sh
index 88770993..6adebc52 100644
--- a/e2e_tests/run_e2e_tests.sh
+++ b/e2e_tests/run_e2e_tests.sh
@@ -1,3 +1,4 @@
+#/bin/sh
 # if any of the commands fail, the script will exit
 set -e