diff --git a/test/compilation/003-sanitizers b/test/compilation/003-sanitizers
index 4da9aa3..a3337f2 100755
--- a/test/compilation/003-sanitizers
+++ b/test/compilation/003-sanitizers
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Run the unit and simulation tests with different compiler sanitizers
 # and under valgrind
 
diff --git a/test/simulation/001-defaults b/test/simulation/001-defaults
index 541cdad..b39d95c 100755
--- a/test/simulation/001-defaults
+++ b/test/simulation/001-defaults
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/002-largenetwork b/test/simulation/002-largenetwork
index fd41106..a9e0ad8 100755
--- a/test/simulation/002-largenetwork
+++ b/test/simulation/002-largenetwork
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/003-largefreqoffset b/test/simulation/003-largefreqoffset
index 7210662..9381b1a 100755
--- a/test/simulation/003-largefreqoffset
+++ b/test/simulation/003-largefreqoffset
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/004-largetimeoffset b/test/simulation/004-largetimeoffset
index 5d8e2b6..4aebdd3 100755
--- a/test/simulation/004-largetimeoffset
+++ b/test/simulation/004-largetimeoffset
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/005-externalstep b/test/simulation/005-externalstep
index 709c8a8..e6fff26 100755
--- a/test/simulation/005-externalstep
+++ b/test/simulation/005-externalstep
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/006-largejitter b/test/simulation/006-largejitter
index f70e63c..36ae5e2 100755
--- a/test/simulation/006-largejitter
+++ b/test/simulation/006-largejitter
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/007-largewander b/test/simulation/007-largewander
index 5572cbc..af0c599 100755
--- a/test/simulation/007-largewander
+++ b/test/simulation/007-largewander
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/008-ntpera b/test/simulation/008-ntpera
index 360a97d..637ad9e 100755
--- a/test/simulation/008-ntpera
+++ b/test/simulation/008-ntpera
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "NTP eras"
diff --git a/test/simulation/009-sourceselection b/test/simulation/009-sourceselection
index 7e60931..547c376 100755
--- a/test/simulation/009-sourceselection
+++ b/test/simulation/009-sourceselection
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/010-multrecv b/test/simulation/010-multrecv
index 8adfab6..36e7476 100755
--- a/test/simulation/010-multrecv
+++ b/test/simulation/010-multrecv
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/011-asymjitter b/test/simulation/011-asymjitter
index 18e6ec1..9fb5567 100755
--- a/test/simulation/011-asymjitter
+++ b/test/simulation/011-asymjitter
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/012-daemonts b/test/simulation/012-daemonts
index b883516..a1b90e3 100755
--- a/test/simulation/012-daemonts
+++ b/test/simulation/012-daemonts
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/013-nameserv b/test/simulation/013-nameserv
index 84f0c8d..941026b 100755
--- a/test/simulation/013-nameserv
+++ b/test/simulation/013-nameserv
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/101-poll b/test/simulation/101-poll
index cb3647f..1856a27 100755
--- a/test/simulation/101-poll
+++ b/test/simulation/101-poll
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "minpoll/maxpoll options"
diff --git a/test/simulation/102-iburst b/test/simulation/102-iburst
index bd82530..9936572 100755
--- a/test/simulation/102-iburst
+++ b/test/simulation/102-iburst
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "iburst option"
diff --git a/test/simulation/103-initstepslew b/test/simulation/103-initstepslew
index 303020e..4595194 100755
--- a/test/simulation/103-initstepslew
+++ b/test/simulation/103-initstepslew
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "initstepslew directive"
diff --git a/test/simulation/104-driftfile b/test/simulation/104-driftfile
index 703dad7..93d4363 100755
--- a/test/simulation/104-driftfile
+++ b/test/simulation/104-driftfile
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "driftfile directive"
diff --git a/test/simulation/105-ntpauth b/test/simulation/105-ntpauth
index 9503138..1f228f5 100755
--- a/test/simulation/105-ntpauth
+++ b/test/simulation/105-ntpauth
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/106-refclock b/test/simulation/106-refclock
index c4cec20..ee1fd66 100755
--- a/test/simulation/106-refclock
+++ b/test/simulation/106-refclock
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "SHM refclock"
diff --git a/test/simulation/107-allowdeny b/test/simulation/107-allowdeny
index 3ab83ff..4665337 100755
--- a/test/simulation/107-allowdeny
+++ b/test/simulation/107-allowdeny
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/108-peer b/test/simulation/108-peer
index 20e2254..906de17 100755
--- a/test/simulation/108-peer
+++ b/test/simulation/108-peer
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/109-makestep b/test/simulation/109-makestep
index f984f72..78d8d59 100755
--- a/test/simulation/109-makestep
+++ b/test/simulation/109-makestep
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "makestep directive"
diff --git a/test/simulation/110-chronyc b/test/simulation/110-chronyc
index c517249..51f2d1d 100755
--- a/test/simulation/110-chronyc
+++ b/test/simulation/110-chronyc
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/111-knownclient b/test/simulation/111-knownclient
index 3d3fd87..92bad54 100755
--- a/test/simulation/111-knownclient
+++ b/test/simulation/111-knownclient
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/112-port b/test/simulation/112-port
index a8efabd..2f10eed 100755
--- a/test/simulation/112-port
+++ b/test/simulation/112-port
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/113-leapsecond b/test/simulation/113-leapsecond
index 2fb81b8..394440b 100755
--- a/test/simulation/113-leapsecond
+++ b/test/simulation/113-leapsecond
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/114-presend b/test/simulation/114-presend
index 3113253..4fd89f8 100755
--- a/test/simulation/114-presend
+++ b/test/simulation/114-presend
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "presend option"
diff --git a/test/simulation/115-cmdmontime b/test/simulation/115-cmdmontime
index ea79b26..525062d 100755
--- a/test/simulation/115-cmdmontime
+++ b/test/simulation/115-cmdmontime
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/116-minsources b/test/simulation/116-minsources
index 392f360..f576423 100755
--- a/test/simulation/116-minsources
+++ b/test/simulation/116-minsources
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/117-fallbackdrift b/test/simulation/117-fallbackdrift
index 22270c9..21f6963 100755
--- a/test/simulation/117-fallbackdrift
+++ b/test/simulation/117-fallbackdrift
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "fallback drift"
diff --git a/test/simulation/118-maxdelay b/test/simulation/118-maxdelay
index 22b9a50..bb8b47c 100755
--- a/test/simulation/118-maxdelay
+++ b/test/simulation/118-maxdelay
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "maxdelay options"
diff --git a/test/simulation/119-smoothtime b/test/simulation/119-smoothtime
index 3f90715..7f5114c 100755
--- a/test/simulation/119-smoothtime
+++ b/test/simulation/119-smoothtime
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/120-selectoptions b/test/simulation/120-selectoptions
index b4b6704..611815e 100755
--- a/test/simulation/120-selectoptions
+++ b/test/simulation/120-selectoptions
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/121-orphan b/test/simulation/121-orphan
index c3d043f..7579997 100755
--- a/test/simulation/121-orphan
+++ b/test/simulation/121-orphan
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/122-xleave b/test/simulation/122-xleave
index 66eef5c..f137f19 100755
--- a/test/simulation/122-xleave
+++ b/test/simulation/122-xleave
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "interleaved mode"
diff --git a/test/simulation/123-mindelay b/test/simulation/123-mindelay
index cde214a..89a9f33 100755
--- a/test/simulation/123-mindelay
+++ b/test/simulation/123-mindelay
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/124-tai b/test/simulation/124-tai
index d41d29d..97064f7 100755
--- a/test/simulation/124-tai
+++ b/test/simulation/124-tai
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/125-packetloss b/test/simulation/125-packetloss
index 95604da..505e4fa 100755
--- a/test/simulation/125-packetloss
+++ b/test/simulation/125-packetloss
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/126-burst b/test/simulation/126-burst
index d63f290..1cb6f9c 100755
--- a/test/simulation/126-burst
+++ b/test/simulation/126-burst
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/127-filter b/test/simulation/127-filter
index 737d1f9..db70d13 100755
--- a/test/simulation/127-filter
+++ b/test/simulation/127-filter
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/128-nocontrol b/test/simulation/128-nocontrol
index cca82f4..3f0d18d 100755
--- a/test/simulation/128-nocontrol
+++ b/test/simulation/128-nocontrol
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/129-reload b/test/simulation/129-reload
index 9dcf6c4..be2e336 100755
--- a/test/simulation/129-reload
+++ b/test/simulation/129-reload
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/130-quit b/test/simulation/130-quit
index f5f7766..da2b8cf 100755
--- a/test/simulation/130-quit
+++ b/test/simulation/130-quit
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/131-maxchange b/test/simulation/131-maxchange
index 969f71f..59cc0c1 100755
--- a/test/simulation/131-maxchange
+++ b/test/simulation/131-maxchange
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/132-logchange b/test/simulation/132-logchange
index 8db1741..59ddf7c 100755
--- a/test/simulation/132-logchange
+++ b/test/simulation/132-logchange
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/133-hwtimestamp b/test/simulation/133-hwtimestamp
index e4896fc..2c92685 100755
--- a/test/simulation/133-hwtimestamp
+++ b/test/simulation/133-hwtimestamp
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/134-log b/test/simulation/134-log
index 0a6ef76..c7a3433 100755
--- a/test/simulation/134-log
+++ b/test/simulation/134-log
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/135-ratelimit b/test/simulation/135-ratelimit
index cfa5eab..86c435d 100755
--- a/test/simulation/135-ratelimit
+++ b/test/simulation/135-ratelimit
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "ratelimit directive"
diff --git a/test/simulation/136-broadcast b/test/simulation/136-broadcast
index d60d678..1488c53 100755
--- a/test/simulation/136-broadcast
+++ b/test/simulation/136-broadcast
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/137-pool b/test/simulation/137-pool
index 32f44ec..de8d77d 100755
--- a/test/simulation/137-pool
+++ b/test/simulation/137-pool
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/138-syncloop b/test/simulation/138-syncloop
index 8edeec6..2d3999e 100755
--- a/test/simulation/138-syncloop
+++ b/test/simulation/138-syncloop
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/139-nts b/test/simulation/139-nts
index 64a90dc..6a2112d 100755
--- a/test/simulation/139-nts
+++ b/test/simulation/139-nts
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/140-noclientlog b/test/simulation/140-noclientlog
index c456647..502398f 100755
--- a/test/simulation/140-noclientlog
+++ b/test/simulation/140-noclientlog
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 test_start "noclientlog option"
diff --git a/test/simulation/201-freqaccumulation b/test/simulation/201-freqaccumulation
index 7a9c22c..6f14246 100755
--- a/test/simulation/201-freqaccumulation
+++ b/test/simulation/201-freqaccumulation
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/202-prefer b/test/simulation/202-prefer
index ae24848..207c800 100755
--- a/test/simulation/202-prefer
+++ b/test/simulation/202-prefer
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 . ./test.common
 
diff --git a/test/simulation/run b/test/simulation/run
index 463e8dd..0954438 100755
--- a/test/simulation/run
+++ b/test/simulation/run
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 print_help() {
 	echo "$1 [-a] [-i ITERATIONS] [-m MAXFAILS] [-s SEED] [TEST]..."