diff --git a/launch_chffrplus.sh b/launch_chffrplus.sh
index 9256f463af..442a811b16 100755
--- a/launch_chffrplus.sh
+++ b/launch_chffrplus.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 if [ -z "$BASEDIR" ]; then
   BASEDIR="/data/openpilot"
diff --git a/launch_env.sh b/launch_env.sh
index 81578aff01..1e5bc7b607 100755
--- a/launch_env.sh
+++ b/launch_env.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 export OMP_NUM_THREADS=1
 export MKL_NUM_THREADS=1
diff --git a/launch_openpilot.sh b/launch_openpilot.sh
index 2888814c22..d6e3424c34 100755
--- a/launch_openpilot.sh
+++ b/launch_openpilot.sh
@@ -1,3 +1,3 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 exec ./launch_chffrplus.sh
diff --git a/release/build_devel.sh b/release/build_devel.sh
index 7fce11ca72..c6d04396fe 100755
--- a/release/build_devel.sh
+++ b/release/build_devel.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -ex
 
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
diff --git a/release/build_release.sh b/release/build_release.sh
index 510df75e51..bcc4b5cded 100755
--- a/release/build_release.sh
+++ b/release/build_release.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -e
 set -x
 
diff --git a/release/check-dirty.sh b/release/check-dirty.sh
index 9c6389f380..ac049970cf 100755
--- a/release/check-dirty.sh
+++ b/release/check-dirty.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -e
 
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
diff --git a/release/check-submodules.sh b/release/check-submodules.sh
index 5305cecd3a..48850deaf8 100755
--- a/release/check-submodules.sh
+++ b/release/check-submodules.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 while read hash submodule ref; do
   git -C $submodule fetch --depth 3000 origin master
diff --git a/scripts/apply-pr.sh b/scripts/apply-pr.sh
index 74f765391a..ad0af46b49 100755
--- a/scripts/apply-pr.sh
+++ b/scripts/apply-pr.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [ $# -eq 0 ]; then
   echo "usage: $0 <pull-request-number>"
diff --git a/scripts/build_small.sh b/scripts/build_small.sh
index 90f55373e2..176ca5aaa8 100755
--- a/scripts/build_small.sh
+++ b/scripts/build_small.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -ex
 
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
diff --git a/scripts/cell.sh b/scripts/cell.sh
index 4ba007a532..310a9694fd 100755
--- a/scripts/cell.sh
+++ b/scripts/cell.sh
@@ -1,3 +1,3 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 nmcli connection modify --temporary esim ipv4.route-metric 1 ipv6.route-metric 1
 nmcli con up esim
diff --git a/scripts/checkout-pr.sh b/scripts/checkout-pr.sh
index 43f658beff..eeba816d88 100755
--- a/scripts/checkout-pr.sh
+++ b/scripts/checkout-pr.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 if [ $# -eq 0 ]; then
diff --git a/scripts/launch_corolla.sh b/scripts/launch_corolla.sh
index 4e5bca6ce5..926569a1e0 100755
--- a/scripts/launch_corolla.sh
+++ b/scripts/launch_corolla.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
 
diff --git a/scripts/lint.sh b/scripts/lint.sh
index 2b6fd07185..9f4db8e35b 100755
--- a/scripts/lint.sh
+++ b/scripts/lint.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 RED='\033[0;31m'
diff --git a/scripts/retry.sh b/scripts/retry.sh
index 4861748e55..23501d7559 100755
--- a/scripts/retry.sh
+++ b/scripts/retry.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 function fail {
   echo $1 >&2
diff --git a/selfdrive/assets/compress-images.sh b/selfdrive/assets/compress-images.sh
index a1a4f8bb40..de59099bd1 100755
--- a/selfdrive/assets/compress-images.sh
+++ b/selfdrive/assets/compress-images.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 echo "compressing training guide images"
 optipng -o7 -strip all training/*
diff --git a/selfdrive/assets/strip-svg-metadata.sh b/selfdrive/assets/strip-svg-metadata.sh
index a8b35eadde..e51dc9481d 100755
--- a/selfdrive/assets/strip-svg-metadata.sh
+++ b/selfdrive/assets/strip-svg-metadata.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # sudo apt install scour
 
diff --git a/selfdrive/car/tests/big_cars_test.sh b/selfdrive/car/tests/big_cars_test.sh
index af45c9cd14..8b0e96d980 100755
--- a/selfdrive/car/tests/big_cars_test.sh
+++ b/selfdrive/car/tests/big_cars_test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 SCRIPT_DIR=$(dirname "$0")
 BASEDIR=$(realpath "$SCRIPT_DIR/../../../")
@@ -9,4 +9,4 @@ INTERNAL_SEG_CNT=300
 FILEREADER_CACHE=1
 INTERNAL_SEG_LIST=selfdrive/car/tests/test_models_segs.txt
 
-cd selfdrive/car/tests && pytest test_models.py test_car_interfaces.py
\ No newline at end of file
+cd selfdrive/car/tests && pytest test_models.py test_car_interfaces.py
diff --git a/selfdrive/debug/adb.sh b/selfdrive/debug/adb.sh
index 919a82fefc..8fa267fd4d 100755
--- a/selfdrive/debug/adb.sh
+++ b/selfdrive/debug/adb.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -e
 
 PORT=5555
diff --git a/selfdrive/modeld/tests/tf_test/build.sh b/selfdrive/modeld/tests/tf_test/build.sh
index 4e92ca0698..df1d24761e 100755
--- a/selfdrive/modeld/tests/tf_test/build.sh
+++ b/selfdrive/modeld/tests/tf_test/build.sh
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
 clang++ -I /home/batman/one/external/tensorflow/include/ -L /home/batman/one/external/tensorflow/lib -Wl,-rpath=/home/batman/one/external/tensorflow/lib main.cc -ltensorflow
diff --git a/selfdrive/test/scons_build_test.sh b/selfdrive/test/scons_build_test.sh
index a3b33f797a..efc9469deb 100755
--- a/selfdrive/test/scons_build_test.sh
+++ b/selfdrive/test/scons_build_test.sh
@@ -1,10 +1,10 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 SCRIPT_DIR=$(dirname "$0")
 BASEDIR=$(realpath "$SCRIPT_DIR/../../")
 cd $BASEDIR
 
-# tests that our build system's dependencies are configured properly, 
+# tests that our build system's dependencies are configured properly,
 # needs a machine with lots of cores
 scons --clean
-scons --no-cache --random -j$(nproc)
\ No newline at end of file
+scons --no-cache --random -j$(nproc)
diff --git a/selfdrive/test/setup_device_ci.sh b/selfdrive/test/setup_device_ci.sh
index 84dae25821..fdc222e7e7 100755
--- a/selfdrive/test/setup_device_ci.sh
+++ b/selfdrive/test/setup_device_ci.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
@@ -23,7 +23,7 @@ rm -rf /data/safe_staging/* || true
 
 CONTINUE_PATH="/data/continue.sh"
 tee $CONTINUE_PATH << EOF
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 sudo abctl --set_success
 
diff --git a/selfdrive/test/setup_vsound.sh b/selfdrive/test/setup_vsound.sh
index a6601d0a61..aab1499744 100755
--- a/selfdrive/test/setup_vsound.sh
+++ b/selfdrive/test/setup_vsound.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 {
   #start pulseaudio daemon
diff --git a/selfdrive/ui/installer/continue_openpilot.sh b/selfdrive/ui/installer/continue_openpilot.sh
index 3da67313eb..ed41ab6f3f 100755
--- a/selfdrive/ui/installer/continue_openpilot.sh
+++ b/selfdrive/ui/installer/continue_openpilot.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 cd /data/openpilot
 exec ./launch_openpilot.sh
diff --git a/selfdrive/ui/tests/create_test_translations.sh b/selfdrive/ui/tests/create_test_translations.sh
index 451a3cbfb0..ed0890d946 100755
--- a/selfdrive/ui/tests/create_test_translations.sh
+++ b/selfdrive/ui/tests/create_test_translations.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/system/hardware/tici/restart_modem.sh b/system/hardware/tici/restart_modem.sh
index 3c67d9d21d..741dc72050 100755
--- a/system/hardware/tici/restart_modem.sh
+++ b/system/hardware/tici/restart_modem.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 #nmcli connection modify --temporary lte gsm.home-only yes
 #nmcli connection modify --temporary lte gsm.auto-config yes
diff --git a/tools/joystick/joystickd.py b/tools/joystick/joystickd.py
index 176ff25be6..6b85be8777 100755
--- a/tools/joystick/joystickd.py
+++ b/tools/joystick/joystickd.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import os
 import argparse
 import threading
diff --git a/tools/lib/kbhit.py b/tools/lib/kbhit.py
index 4451d02aea..3881ee7d18 100755
--- a/tools/lib/kbhit.py
+++ b/tools/lib/kbhit.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import sys
 import termios
 import atexit
diff --git a/tools/profiling/clpeak/build.sh b/tools/profiling/clpeak/build.sh
index 1dcb05cbbc..5206ed0c45 100755
--- a/tools/profiling/clpeak/build.sh
+++ b/tools/profiling/clpeak/build.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 cd $DIR
diff --git a/tools/profiling/ftrace.sh b/tools/profiling/ftrace.sh
index fe91a3c0d9..7d5d1f5f9d 100755
--- a/tools/profiling/ftrace.sh
+++ b/tools/profiling/ftrace.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -e
 
 cd /sys/kernel/tracing
diff --git a/tools/profiling/palanteer/setup.sh b/tools/profiling/palanteer/setup.sh
index e912a9367f..6f115dc86b 100755
--- a/tools/profiling/palanteer/setup.sh
+++ b/tools/profiling/palanteer/setup.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/tools/profiling/perfetto/build.sh b/tools/profiling/perfetto/build.sh
index 448c1d04ae..24255ac3b0 100755
--- a/tools/profiling/perfetto/build.sh
+++ b/tools/profiling/perfetto/build.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 if [ ! -d perfetto ]; then
   git clone https://android.googlesource.com/platform/external/perfetto/
diff --git a/tools/profiling/perfetto/copy.sh b/tools/profiling/perfetto/copy.sh
index 8deca9a6e7..b91d49a80b 100755
--- a/tools/profiling/perfetto/copy.sh
+++ b/tools/profiling/perfetto/copy.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 DEST=tici:/data/openpilot/selfdrive/debug/profiling/perfetto
 
diff --git a/tools/profiling/perfetto/record.sh b/tools/profiling/perfetto/record.sh
index 99f2168771..9715a7e7e9 100755
--- a/tools/profiling/perfetto/record.sh
+++ b/tools/profiling/perfetto/record.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
 cd $DIR
diff --git a/tools/profiling/perfetto/server.sh b/tools/profiling/perfetto/server.sh
index 19958c653b..103ad9bd84 100755
--- a/tools/profiling/perfetto/server.sh
+++ b/tools/profiling/perfetto/server.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 curl -LO https://get.perfetto.dev/trace_processor
 chmod +x ./trace_processor
diff --git a/tools/profiling/perfetto/traces.sh b/tools/profiling/perfetto/traces.sh
index 489b042377..17ca89da72 100755
--- a/tools/profiling/perfetto/traces.sh
+++ b/tools/profiling/perfetto/traces.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 DEST=tici:/data/openpilot/selfdrive/debug/profiling/perfetto
 
diff --git a/tools/profiling/snapdragon/setup-agnos.sh b/tools/profiling/snapdragon/setup-agnos.sh
index f036ca2111..9a781bf3ce 100755
--- a/tools/profiling/snapdragon/setup-agnos.sh
+++ b/tools/profiling/snapdragon/setup-agnos.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # TODO: there's probably a better way to do this
 
diff --git a/tools/profiling/snapdragon/setup-profiler.sh b/tools/profiling/snapdragon/setup-profiler.sh
index aaec1bf756..b97c1ae688 100755
--- a/tools/profiling/snapdragon/setup-profiler.sh
+++ b/tools/profiling/snapdragon/setup-profiler.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # install depends
 sudo apt update
@@ -11,4 +11,4 @@ echo "deb https://download.mono-project.com/repo/ubuntu stable-xenial main" | su
 sudo apt update
 sudo apt-get install -y mono-complete
 
-echo "Setup successful, you should now be able to run the profiler with cd SnapdragonProfiler and ./run_sdp.sh"
\ No newline at end of file
+echo "Setup successful, you should now be able to run the profiler with cd SnapdragonProfiler and ./run_sdp.sh"
diff --git a/tools/profiling/watch-irqs.sh b/tools/profiling/watch-irqs.sh
index 34cc4596f4..4e5cfde3c8 100755
--- a/tools/profiling/watch-irqs.sh
+++ b/tools/profiling/watch-irqs.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -e
 
 RUBYOPT="-W0" irqtop -d1 -R
diff --git a/tools/rerun/run.sh b/tools/rerun/run.sh
index 25190411d1..0c02615360 100755
--- a/tools/rerun/run.sh
+++ b/tools/rerun/run.sh
@@ -1,4 +1,4 @@
-#! /bin/bash
+#!/usr/bin/env bash
 
 # TODO: remove this file once Rerun has interface to set log message level
 set -e
diff --git a/tools/scripts/save_ubloxraw_stream.py b/tools/scripts/save_ubloxraw_stream.py
index ecbc2bb31e..b5354a7831 100755
--- a/tools/scripts/save_ubloxraw_stream.py
+++ b/tools/scripts/save_ubloxraw_stream.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import argparse
 import os
 import sys
diff --git a/tools/serial/connect.sh b/tools/serial/connect.sh
index a073310b0a..0ea4a73620 100755
--- a/tools/serial/connect.sh
+++ b/tools/serial/connect.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 while true; do
   if ls /dev/serial/by-id/usb-FTDI_FT230X* 2> /dev/null; then
diff --git a/tools/sim/launch_openpilot.sh b/tools/sim/launch_openpilot.sh
index 1b4ac4ef84..30c5b73827 100755
--- a/tools/sim/launch_openpilot.sh
+++ b/tools/sim/launch_openpilot.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 export PASSIVE="0"
 export NOBOARD="1"
diff --git a/tools/sim/run_bridge.py b/tools/sim/run_bridge.py
index 0992ef4bfe..b4da703da0 100755
--- a/tools/sim/run_bridge.py
+++ b/tools/sim/run_bridge.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import argparse
 
 from typing import Any
diff --git a/tools/webcam/start_camerad.sh b/tools/webcam/start_camerad.sh
index fbda2be9f3..d4828b3e25 100755
--- a/tools/webcam/start_camerad.sh
+++ b/tools/webcam/start_camerad.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # export the block below when call manager.py
 export BLOCK="${BLOCK},camerad"