diff --git a/MAVProxy/modules/lib/ANUGA/lat_long_UTM_conversion.py b/MAVProxy/modules/lib/ANUGA/lat_long_UTM_conversion.py
index 9d13f33b48..f751a3431f 100644
--- a/MAVProxy/modules/lib/ANUGA/lat_long_UTM_conversion.py
+++ b/MAVProxy/modules/lib/ANUGA/lat_long_UTM_conversion.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Lat Long - UTM, UTM - Lat Long conversions
 #
diff --git a/MAVProxy/modules/lib/LowPassFilter2p.py b/MAVProxy/modules/lib/LowPassFilter2p.py
index f7df22307e..d2c656270b 100644
--- a/MAVProxy/modules/lib/LowPassFilter2p.py
+++ b/MAVProxy/modules/lib/LowPassFilter2p.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from math import *
 
diff --git a/MAVProxy/modules/lib/camera_projection.py b/MAVProxy/modules/lib/camera_projection.py
index 35f5c3f1d1..48f2c04eb1 100755
--- a/MAVProxy/modules/lib/camera_projection.py
+++ b/MAVProxy/modules/lib/camera_projection.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 class to project a camera view onto the map
 '''
diff --git a/MAVProxy/modules/lib/grapher.py b/MAVProxy/modules/lib/grapher.py
index 9d9a8de687..ada5f7d5b9 100755
--- a/MAVProxy/modules/lib/grapher.py
+++ b/MAVProxy/modules/lib/grapher.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
  core library for graphing in mavexplorer
diff --git a/MAVProxy/modules/lib/kmlread.py b/MAVProxy/modules/lib/kmlread.py
index 335a9e6d1c..b79562ad30 100644
--- a/MAVProxy/modules/lib/kmlread.py
+++ b/MAVProxy/modules/lib/kmlread.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import lxml.etree as etree
 from io import BytesIO as SIO
diff --git a/MAVProxy/modules/lib/live_graph.py b/MAVProxy/modules/lib/live_graph.py
index dcf9644167..d11a4107d5 100755
--- a/MAVProxy/modules/lib/live_graph.py
+++ b/MAVProxy/modules/lib/live_graph.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 
diff --git a/MAVProxy/modules/lib/magfit.py b/MAVProxy/modules/lib/magfit.py
index df6a0ed6f7..ccecf8af7d 100644
--- a/MAVProxy/modules/lib/magfit.py
+++ b/MAVProxy/modules/lib/magfit.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 fit best estimate of magnetometer offsets, diagonals, off-diagonals, cmot and scaling using WMM target
diff --git a/MAVProxy/modules/lib/mav_fft.py b/MAVProxy/modules/lib/mav_fft.py
index b9013832fc..9a686fe59f 100644
--- a/MAVProxy/modules/lib/mav_fft.py
+++ b/MAVProxy/modules/lib/mav_fft.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 extract ISBH and ISBD messages from AP_Logging files and produce FFT plots
diff --git a/MAVProxy/modules/lib/mission_item_protocol.py b/MAVProxy/modules/lib/mission_item_protocol.py
index 0067cb6418..f30edc4d09 100644
--- a/MAVProxy/modules/lib/mission_item_protocol.py
+++ b/MAVProxy/modules/lib/mission_item_protocol.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 base class for modules generally transfering items using the MISSION_ITEM protocol
diff --git a/MAVProxy/modules/lib/mp_checklist.py b/MAVProxy/modules/lib/mp_checklist.py
index 6d20a76a52..20eea4e43c 100755
--- a/MAVProxy/modules/lib/mp_checklist.py
+++ b/MAVProxy/modules/lib/mp_checklist.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
   MAVProxy checklist, implemented in a child process
diff --git a/MAVProxy/modules/lib/mp_elevation.py b/MAVProxy/modules/lib/mp_elevation.py
index 4e781b7001..47af99b041 100755
--- a/MAVProxy/modules/lib/mp_elevation.py
+++ b/MAVProxy/modules/lib/mp_elevation.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 '''
 Wrapper for the SRTM module (srtm.py)
 It will grab the altitude of a long,lat pair from the SRTM database
diff --git a/MAVProxy/modules/lib/mp_image.py b/MAVProxy/modules/lib/mp_image.py
index 3511177243..7ea6f03ed2 100755
--- a/MAVProxy/modules/lib/mp_image.py
+++ b/MAVProxy/modules/lib/mp_image.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 
diff --git a/MAVProxy/modules/lib/mp_instructor.py b/MAVProxy/modules/lib/mp_instructor.py
index 6bfd0c4ce4..02c4cb70af 100755
--- a/MAVProxy/modules/lib/mp_instructor.py
+++ b/MAVProxy/modules/lib/mp_instructor.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
   MAVProxy instructor station, UI runs in a child process
diff --git a/MAVProxy/modules/lib/mp_menu.py b/MAVProxy/modules/lib/mp_menu.py
index 862824b645..217b6f66d7 100644
--- a/MAVProxy/modules/lib/mp_menu.py
+++ b/MAVProxy/modules/lib/mp_menu.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 menu handling widgets for wx
 
diff --git a/MAVProxy/modules/lib/mp_settings.py b/MAVProxy/modules/lib/mp_settings.py
index 982217c380..6a6cab25d6 100644
--- a/MAVProxy/modules/lib/mp_settings.py
+++ b/MAVProxy/modules/lib/mp_settings.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''settings object for MAVProxy modules'''
 
 import time
diff --git a/MAVProxy/modules/lib/mp_util.py b/MAVProxy/modules/lib/mp_util.py
index 7d0e4d42e5..9eb1d1b0ce 100644
--- a/MAVProxy/modules/lib/mp_util.py
+++ b/MAVProxy/modules/lib/mp_util.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 '''common mavproxy utility functions'''
 
diff --git a/MAVProxy/modules/lib/mp_widgets.py b/MAVProxy/modules/lib/mp_widgets.py
index f2c929e438..9115a572ef 100644
--- a/MAVProxy/modules/lib/mp_widgets.py
+++ b/MAVProxy/modules/lib/mp_widgets.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 some useful wx widgets
 
diff --git a/MAVProxy/modules/lib/msgstats.py b/MAVProxy/modules/lib/msgstats.py
index 31b9bf39c4..cab9cc37c5 100644
--- a/MAVProxy/modules/lib/msgstats.py
+++ b/MAVProxy/modules/lib/msgstats.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 show stats on messages in a log in MAVExplorer
diff --git a/MAVProxy/modules/lib/ntrip.py b/MAVProxy/modules/lib/ntrip.py
index 6f53fd60f4..66586c8cc8 100755
--- a/MAVProxy/modules/lib/ntrip.py
+++ b/MAVProxy/modules/lib/ntrip.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
  NTRIP client module
  based on client from http://github.com/jcmb/NTRIP
diff --git a/MAVProxy/modules/lib/rtcm3.py b/MAVProxy/modules/lib/rtcm3.py
index bac263fd6e..5bde1a57b2 100644
--- a/MAVProxy/modules/lib/rtcm3.py
+++ b/MAVProxy/modules/lib/rtcm3.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''Decode RTCM v3 messages'''
 
 RTCMv3_PREAMBLE = 0xD3
diff --git a/MAVProxy/modules/lib/srtm.py b/MAVProxy/modules/lib/srtm.py
index 6ae9db353d..387a073309 100755
--- a/MAVProxy/modules/lib/srtm.py
+++ b/MAVProxy/modules/lib/srtm.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Pylint: Disable name warnings
 # pylint: disable-msg=C0103
diff --git a/MAVProxy/modules/lib/textconsole.py b/MAVProxy/modules/lib/textconsole.py
index 7cf2480e7c..31bc4fa2ea 100644
--- a/MAVProxy/modules/lib/textconsole.py
+++ b/MAVProxy/modules/lib/textconsole.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
   MAVProxy default console
diff --git a/MAVProxy/modules/lib/win_layout.py b/MAVProxy/modules/lib/win_layout.py
index 7b021f1f33..eeb59d98b7 100644
--- a/MAVProxy/modules/lib/win_layout.py
+++ b/MAVProxy/modules/lib/win_layout.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 import os, wx, pickle
diff --git a/MAVProxy/modules/lib/wxconsole.py b/MAVProxy/modules/lib/wxconsole.py
index 7a221def40..e172eaad51 100755
--- a/MAVProxy/modules/lib/wxconsole.py
+++ b/MAVProxy/modules/lib/wxconsole.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
   MAVProxy message console, implemented in a child process
diff --git a/MAVProxy/modules/lib/wxhorizon.py b/MAVProxy/modules/lib/wxhorizon.py
index 97d4c78b3c..0271144634 100755
--- a/MAVProxy/modules/lib/wxhorizon.py
+++ b/MAVProxy/modules/lib/wxhorizon.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
   MAVProxy horizon indicator.
diff --git a/MAVProxy/modules/lib/wxrc.py b/MAVProxy/modules/lib/wxrc.py
index 91d7d1e576..6815f20258 100644
--- a/MAVProxy/modules/lib/wxrc.py
+++ b/MAVProxy/modules/lib/wxrc.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
   MAVProxy RC GUI
diff --git a/MAVProxy/modules/lib/wxsaildash.py b/MAVProxy/modules/lib/wxsaildash.py
index 847df637ef..22e3025f38 100644
--- a/MAVProxy/modules/lib/wxsaildash.py
+++ b/MAVProxy/modules/lib/wxsaildash.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
   MAVProxy sailing dashboard
diff --git a/MAVProxy/modules/mavproxy_DGPS.py b/MAVProxy/modules/mavproxy_DGPS.py
index 217bbb6ece..1b0be88704 100644
--- a/MAVProxy/modules/mavproxy_DGPS.py
+++ b/MAVProxy/modules/mavproxy_DGPS.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 support for a GCS attached DGPS system
 '''
diff --git a/MAVProxy/modules/mavproxy_GPSInput.py b/MAVProxy/modules/mavproxy_GPSInput.py
index 7716ff8134..e285f3810e 100644
--- a/MAVProxy/modules/mavproxy_GPSInput.py
+++ b/MAVProxy/modules/mavproxy_GPSInput.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 support for GPS_INPUT message
 '''
diff --git a/MAVProxy/modules/mavproxy_HIL.py b/MAVProxy/modules/mavproxy_HIL.py
index 7dd9cbdf75..b4dd73dc17 100644
--- a/MAVProxy/modules/mavproxy_HIL.py
+++ b/MAVProxy/modules/mavproxy_HIL.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 HIL module
 Andrew Tridgell
diff --git a/MAVProxy/modules/mavproxy_antenna.py b/MAVProxy/modules/mavproxy_antenna.py
index a197526321..8635e9d9a5 100644
--- a/MAVProxy/modules/mavproxy_antenna.py
+++ b/MAVProxy/modules/mavproxy_antenna.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 antenna pointing module
 Andrew Tridgell
diff --git a/MAVProxy/modules/mavproxy_arm.py b/MAVProxy/modules/mavproxy_arm.py
index 6898bd2492..dac121729d 100644
--- a/MAVProxy/modules/mavproxy_arm.py
+++ b/MAVProxy/modules/mavproxy_arm.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''arm/disarm command handling'''
 
 import time, os
diff --git a/MAVProxy/modules/mavproxy_auxopt.py b/MAVProxy/modules/mavproxy_auxopt.py
index b08a688127..63b238335e 100644
--- a/MAVProxy/modules/mavproxy_auxopt.py
+++ b/MAVProxy/modules/mavproxy_auxopt.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''auxopt command handling'''
 
 import time, os
diff --git a/MAVProxy/modules/mavproxy_battery.py b/MAVProxy/modules/mavproxy_battery.py
index 66ef575781..06625dd4cf 100644
--- a/MAVProxy/modules/mavproxy_battery.py
+++ b/MAVProxy/modules/mavproxy_battery.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''battery commands'''
 
 import time, math
diff --git a/MAVProxy/modules/mavproxy_calibration.py b/MAVProxy/modules/mavproxy_calibration.py
index 842a71acde..e93bc32630 100644
--- a/MAVProxy/modules/mavproxy_calibration.py
+++ b/MAVProxy/modules/mavproxy_calibration.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''calibration command handling'''
 
 import time, os
diff --git a/MAVProxy/modules/mavproxy_cameraview.py b/MAVProxy/modules/mavproxy_cameraview.py
index 39f58811f9..300969ca80 100644
--- a/MAVProxy/modules/mavproxy_cameraview.py
+++ b/MAVProxy/modules/mavproxy_cameraview.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 camera view module
 Malcolm Gill
diff --git a/MAVProxy/modules/mavproxy_checklist.py b/MAVProxy/modules/mavproxy_checklist.py
index 6fd8d0016e..9c16422975 100755
--- a/MAVProxy/modules/mavproxy_checklist.py
+++ b/MAVProxy/modules/mavproxy_checklist.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 Checklist module
 Stephen Dade
diff --git a/MAVProxy/modules/mavproxy_cmdlong.py b/MAVProxy/modules/mavproxy_cmdlong.py
index 08986c4b2f..0ff00fbe52 100644
--- a/MAVProxy/modules/mavproxy_cmdlong.py
+++ b/MAVProxy/modules/mavproxy_cmdlong.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''command long'''
 
 import time, os
diff --git a/MAVProxy/modules/mavproxy_dataflash_logger.py b/MAVProxy/modules/mavproxy_dataflash_logger.py
index 3986e94c95..833d6db93b 100644
--- a/MAVProxy/modules/mavproxy_dataflash_logger.py
+++ b/MAVProxy/modules/mavproxy_dataflash_logger.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 
diff --git a/MAVProxy/modules/mavproxy_devop.py b/MAVProxy/modules/mavproxy_devop.py
index e6f2e53f0d..5ad10e4edb 100644
--- a/MAVProxy/modules/mavproxy_devop.py
+++ b/MAVProxy/modules/mavproxy_devop.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''remote low level device operations'''
 
 import time, os, sys
diff --git a/MAVProxy/modules/mavproxy_example.py b/MAVProxy/modules/mavproxy_example.py
index 595d1f9639..953bb672f9 100644
--- a/MAVProxy/modules/mavproxy_example.py
+++ b/MAVProxy/modules/mavproxy_example.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 Example Module
 Peter Barker, September 2016
diff --git a/MAVProxy/modules/mavproxy_fakegps.py b/MAVProxy/modules/mavproxy_fakegps.py
index c5be3551d0..c59ae5b07a 100644
--- a/MAVProxy/modules/mavproxy_fakegps.py
+++ b/MAVProxy/modules/mavproxy_fakegps.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''fake GPS input using GPS_INPUT packet'''
 
 import time
diff --git a/MAVProxy/modules/mavproxy_fieldcheck/__init__.py b/MAVProxy/modules/mavproxy_fieldcheck/__init__.py
index fa8ec1a5bc..b9f925b2e8 100755
--- a/MAVProxy/modules/mavproxy_fieldcheck/__init__.py
+++ b/MAVProxy/modules/mavproxy_fieldcheck/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 CMAC mission control
 Peter Barker
diff --git a/MAVProxy/modules/mavproxy_firmware.py b/MAVProxy/modules/mavproxy_firmware.py
index e85f986371..de48dc95dd 100644
--- a/MAVProxy/modules/mavproxy_firmware.py
+++ b/MAVProxy/modules/mavproxy_firmware.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 
diff --git a/MAVProxy/modules/mavproxy_followtest.py b/MAVProxy/modules/mavproxy_followtest.py
index 10b62dce8e..8f97532b0b 100644
--- a/MAVProxy/modules/mavproxy_followtest.py
+++ b/MAVProxy/modules/mavproxy_followtest.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
  test follow-me options in ArduPilot
  Andrew Tridgell
diff --git a/MAVProxy/modules/mavproxy_ftp.py b/MAVProxy/modules/mavproxy_ftp.py
index 9c5d2a43d0..6c8156ad07 100644
--- a/MAVProxy/modules/mavproxy_ftp.py
+++ b/MAVProxy/modules/mavproxy_ftp.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''mavlink file transfer support'''
 
 import io
diff --git a/MAVProxy/modules/mavproxy_generator.py b/MAVProxy/modules/mavproxy_generator.py
index 50c81eb886..cd0881c7f0 100644
--- a/MAVProxy/modules/mavproxy_generator.py
+++ b/MAVProxy/modules/mavproxy_generator.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 Generator Module - module for generators reporting via the GENERATOR_STATUS message
 Peter Barker, Jun 2020
diff --git a/MAVProxy/modules/mavproxy_gimbal.py b/MAVProxy/modules/mavproxy_gimbal.py
index f2857caf89..66a066a24a 100644
--- a/MAVProxy/modules/mavproxy_gimbal.py
+++ b/MAVProxy/modules/mavproxy_gimbal.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 gimbal control module
 Andrew Tridgell
diff --git a/MAVProxy/modules/mavproxy_gopro.py b/MAVProxy/modules/mavproxy_gopro.py
index 5358f57ad0..5deb859e00 100644
--- a/MAVProxy/modules/mavproxy_gopro.py
+++ b/MAVProxy/modules/mavproxy_gopro.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''gopro control over mavlink for the solo-gimbal
 
 To use this module connect to a Solo with a GoPro installed on the gimbal.
diff --git a/MAVProxy/modules/mavproxy_instructor.py b/MAVProxy/modules/mavproxy_instructor.py
index 50683c2bdf..1e71c5e102 100755
--- a/MAVProxy/modules/mavproxy_instructor.py
+++ b/MAVProxy/modules/mavproxy_instructor.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
   MAVProxy instructor station module
   André Kjellstrup @ NORCE
diff --git a/MAVProxy/modules/mavproxy_joystick/findjoy.py b/MAVProxy/modules/mavproxy_joystick/findjoy.py
index 2722163864..dbfd10f0a2 100644
--- a/MAVProxy/modules/mavproxy_joystick/findjoy.py
+++ b/MAVProxy/modules/mavproxy_joystick/findjoy.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''This is a script that will help you identify controls on your joystick
 in order to create an appropriate joystick definition for the joystick
diff --git a/MAVProxy/modules/mavproxy_kmlread.py b/MAVProxy/modules/mavproxy_kmlread.py
index 818cb986d9..0d17c1c099 100644
--- a/MAVProxy/modules/mavproxy_kmlread.py
+++ b/MAVProxy/modules/mavproxy_kmlread.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''Module to add or clear kml layers on the map
 
 Copyright Stephen Dade 2016
diff --git a/MAVProxy/modules/mavproxy_layout.py b/MAVProxy/modules/mavproxy_layout.py
index b77091fd69..e52045fc44 100644
--- a/MAVProxy/modules/mavproxy_layout.py
+++ b/MAVProxy/modules/mavproxy_layout.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''window layout command handling'''
 
 from MAVProxy.modules.lib import mp_module
diff --git a/MAVProxy/modules/mavproxy_link.py b/MAVProxy/modules/mavproxy_link.py
index 946e7d1003..ecb4fc34ef 100644
--- a/MAVProxy/modules/mavproxy_link.py
+++ b/MAVProxy/modules/mavproxy_link.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''enable run-time addition and removal of master link, just like --master on the cnd line
 
diff --git a/MAVProxy/modules/mavproxy_log.py b/MAVProxy/modules/mavproxy_log.py
index 9532b08a22..992878c790 100644
--- a/MAVProxy/modules/mavproxy_log.py
+++ b/MAVProxy/modules/mavproxy_log.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''log command handling'''
 
 import time, os
diff --git a/MAVProxy/modules/mavproxy_map/GAreader.py b/MAVProxy/modules/mavproxy_map/GAreader.py
index 19c1d8c17f..65d87e01c3 100755
--- a/MAVProxy/modules/mavproxy_map/GAreader.py
+++ b/MAVProxy/modules/mavproxy_map/GAreader.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 Module to read DTM files published by Geoscience Australia
 Written by Stephen Dade (stephen_dade@hotmail.com
diff --git a/MAVProxy/modules/mavproxy_map/__init__.py b/MAVProxy/modules/mavproxy_map/__init__.py
index 5340567d7c..680b03b7e8 100644
--- a/MAVProxy/modules/mavproxy_map/__init__.py
+++ b/MAVProxy/modules/mavproxy_map/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 map display module
 Andrew Tridgell
diff --git a/MAVProxy/modules/mavproxy_map/mp_elevation.py b/MAVProxy/modules/mavproxy_map/mp_elevation.py
index 360ac26811..3274c6ff2d 100644
--- a/MAVProxy/modules/mavproxy_map/mp_elevation.py
+++ b/MAVProxy/modules/mavproxy_map/mp_elevation.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 '''backwards-compatability module - ElevationModel was moved into lib
 but we don't want to break existing users
diff --git a/MAVProxy/modules/mavproxy_map/mp_slipmap.py b/MAVProxy/modules/mavproxy_map/mp_slipmap.py
index e173c24ecb..d928d99333 100755
--- a/MAVProxy/modules/mavproxy_map/mp_slipmap.py
+++ b/MAVProxy/modules/mavproxy_map/mp_slipmap.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 '''
 slipmap based on mp_tile
diff --git a/MAVProxy/modules/mavproxy_map/mp_slipmap_util.py b/MAVProxy/modules/mavproxy_map/mp_slipmap_util.py
index aff9d6853e..53c92bd367 100644
--- a/MAVProxy/modules/mavproxy_map/mp_slipmap_util.py
+++ b/MAVProxy/modules/mavproxy_map/mp_slipmap_util.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 '''
 slipmap based on mp_tile
diff --git a/MAVProxy/modules/mavproxy_map/mp_tile.py b/MAVProxy/modules/mavproxy_map/mp_tile.py
index c13fd2da21..ae68ab6ef9 100755
--- a/MAVProxy/modules/mavproxy_map/mp_tile.py
+++ b/MAVProxy/modules/mavproxy_map/mp_tile.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 access satellite map tile database
 
diff --git a/MAVProxy/modules/mavproxy_map/srtm.py b/MAVProxy/modules/mavproxy_map/srtm.py
index e28fa1aed1..efa6d7cddb 100644
--- a/MAVProxy/modules/mavproxy_map/srtm.py
+++ b/MAVProxy/modules/mavproxy_map/srtm.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 '''backwards-compatability module - srtm was moved into lib
 but we don't want to break existing users
diff --git a/MAVProxy/modules/mavproxy_message.py b/MAVProxy/modules/mavproxy_message.py
index 3d39165cc6..c2ceac86be 100644
--- a/MAVProxy/modules/mavproxy_message.py
+++ b/MAVProxy/modules/mavproxy_message.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 Arbitrary Message Module
 Peter Barker, September 2017
diff --git a/MAVProxy/modules/mavproxy_messagerate.py b/MAVProxy/modules/mavproxy_messagerate.py
index 73bd1c1343..ca467d140b 100644
--- a/MAVProxy/modules/mavproxy_messagerate.py
+++ b/MAVProxy/modules/mavproxy_messagerate.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 Message Rate viewer
 Peter Barker, December 2018
diff --git a/MAVProxy/modules/mavproxy_misc.py b/MAVProxy/modules/mavproxy_misc.py
index 72dd31e22e..e153a1729e 100644
--- a/MAVProxy/modules/mavproxy_misc.py
+++ b/MAVProxy/modules/mavproxy_misc.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 miscellaneous commands
 
diff --git a/MAVProxy/modules/mavproxy_misseditor/__init__.py b/MAVProxy/modules/mavproxy_misseditor/__init__.py
index 27831596f1..4ef85de713 100644
--- a/MAVProxy/modules/mavproxy_misseditor/__init__.py
+++ b/MAVProxy/modules/mavproxy_misseditor/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 mission editor module
 Michael Day
diff --git a/MAVProxy/modules/mavproxy_misseditor/button_renderer.py b/MAVProxy/modules/mavproxy_misseditor/button_renderer.py
index 6817acdd5c..09250cfc34 100644
--- a/MAVProxy/modules/mavproxy_misseditor/button_renderer.py
+++ b/MAVProxy/modules/mavproxy_misseditor/button_renderer.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 Custom button render class for use inside a wx.grid
 (ported from http://forums.wxwidgets.org/viewtopic.php?t=14403 )
diff --git a/MAVProxy/modules/mavproxy_misseditor/me_event.py b/MAVProxy/modules/mavproxy_misseditor/me_event.py
index 67e0fc96d9..bd660443b6 100644
--- a/MAVProxy/modules/mavproxy_misseditor/me_event.py
+++ b/MAVProxy/modules/mavproxy_misseditor/me_event.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 Event class and enums for Mission Editor
 Michael Day
diff --git a/MAVProxy/modules/mavproxy_misseditor/missionEditorFrame.py b/MAVProxy/modules/mavproxy_misseditor/missionEditorFrame.py
index 8ef816bc91..13071b0fce 100755
--- a/MAVProxy/modules/mavproxy_misseditor/missionEditorFrame.py
+++ b/MAVProxy/modules/mavproxy_misseditor/missionEditorFrame.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
 # generated by wxGlade 0.6.8 on Wed Jun 11 13:41:49 2014
diff --git a/MAVProxy/modules/mavproxy_misseditor/mission_editor.py b/MAVProxy/modules/mavproxy_misseditor/mission_editor.py
index 0f5e70ae1f..4bdb8e748c 100644
--- a/MAVProxy/modules/mavproxy_misseditor/mission_editor.py
+++ b/MAVProxy/modules/mavproxy_misseditor/mission_editor.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 mission editor module
 Michael Day
diff --git a/MAVProxy/modules/mavproxy_mode.py b/MAVProxy/modules/mavproxy_mode.py
index 84bb70edeb..9a8ea388aa 100644
--- a/MAVProxy/modules/mavproxy_mode.py
+++ b/MAVProxy/modules/mavproxy_mode.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''mode command handling'''
 
 from pymavlink import mavutil
diff --git a/MAVProxy/modules/mavproxy_movinghome.py b/MAVProxy/modules/mavproxy_movinghome.py
index 28201cc45b..aedb6c6aaa 100644
--- a/MAVProxy/modules/mavproxy_movinghome.py
+++ b/MAVProxy/modules/mavproxy_movinghome.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 movinghome module
 André Kjellstrup, Norce
diff --git a/MAVProxy/modules/mavproxy_msg.py b/MAVProxy/modules/mavproxy_msg.py
index dc1d8712e8..e9f301ae18 100644
--- a/MAVProxy/modules/mavproxy_msg.py
+++ b/MAVProxy/modules/mavproxy_msg.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 Msg Module
 Peter barker, September 2016
diff --git a/MAVProxy/modules/mavproxy_nmeagps.py b/MAVProxy/modules/mavproxy_nmeagps.py
index 337542ff04..c8022c0057 100644
--- a/MAVProxy/modules/mavproxy_nmeagps.py
+++ b/MAVProxy/modules/mavproxy_nmeagps.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 nmea GPS connector
 connect to a NMEA GPS on a serial port and provide this as location position
diff --git a/MAVProxy/modules/mavproxy_nmeaout.py b/MAVProxy/modules/mavproxy_nmeaout.py
index 3201a627d1..3437a999d5 100644
--- a/MAVProxy/modules/mavproxy_nmeaout.py
+++ b/MAVProxy/modules/mavproxy_nmeaout.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 nmea serial output module
 Matthew Ridley
diff --git a/MAVProxy/modules/mavproxy_nsh.py b/MAVProxy/modules/mavproxy_nsh.py
index 0bfa4158a6..d9e25179b1 100644
--- a/MAVProxy/modules/mavproxy_nsh.py
+++ b/MAVProxy/modules/mavproxy_nsh.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''remote nsh console handling'''
 
 import time, os, fnmatch, sys, time
diff --git a/MAVProxy/modules/mavproxy_oldwp.py b/MAVProxy/modules/mavproxy_oldwp.py
index 099d5c46ac..4c3e9d5fbd 100644
--- a/MAVProxy/modules/mavproxy_oldwp.py
+++ b/MAVProxy/modules/mavproxy_oldwp.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''waypoint command handling'''
 
 import copy
diff --git a/MAVProxy/modules/mavproxy_osd.py b/MAVProxy/modules/mavproxy_osd.py
index 399e0bcc48..76cb1eba76 100644
--- a/MAVProxy/modules/mavproxy_osd.py
+++ b/MAVProxy/modules/mavproxy_osd.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 OSD Module
 Andy Piper, August 2020, Vendee, France
diff --git a/MAVProxy/modules/mavproxy_output.py b/MAVProxy/modules/mavproxy_output.py
index e331e5264f..800508d64c 100644
--- a/MAVProxy/modules/mavproxy_output.py
+++ b/MAVProxy/modules/mavproxy_output.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''enable run-time addition and removal of UDP clients , just like --out on the cnd line'''
 ''' TO USE:
     output add 10.11.12.13:14550
diff --git a/MAVProxy/modules/mavproxy_param.py b/MAVProxy/modules/mavproxy_param.py
index 3f828b4577..9fb7314f2e 100644
--- a/MAVProxy/modules/mavproxy_param.py
+++ b/MAVProxy/modules/mavproxy_param.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 param command handling
 
diff --git a/MAVProxy/modules/mavproxy_paramedit/__init__.py b/MAVProxy/modules/mavproxy_paramedit/__init__.py
index 87385567c0..1e1d81bc21 100644
--- a/MAVProxy/modules/mavproxy_paramedit/__init__.py
+++ b/MAVProxy/modules/mavproxy_paramedit/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 param editor module
 Akshath Singhal
diff --git a/MAVProxy/modules/mavproxy_paramedit/checklisteditor.py b/MAVProxy/modules/mavproxy_paramedit/checklisteditor.py
index 87e958e7e6..16fc9afea6 100644
--- a/MAVProxy/modules/mavproxy_paramedit/checklisteditor.py
+++ b/MAVProxy/modules/mavproxy_paramedit/checklisteditor.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import wx
 import wx.grid as gridlib
 import math
diff --git a/MAVProxy/modules/mavproxy_paramedit/param_editor.py b/MAVProxy/modules/mavproxy_paramedit/param_editor.py
index 550a6a8023..d0f096ed28 100644
--- a/MAVProxy/modules/mavproxy_paramedit/param_editor.py
+++ b/MAVProxy/modules/mavproxy_paramedit/param_editor.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 param editor module
 Akshath Singhal
diff --git a/MAVProxy/modules/mavproxy_paramedit/param_editor_frame.py b/MAVProxy/modules/mavproxy_paramedit/param_editor_frame.py
index 6568d1fa7d..4a479fa776 100755
--- a/MAVProxy/modules/mavproxy_paramedit/param_editor_frame.py
+++ b/MAVProxy/modules/mavproxy_paramedit/param_editor_frame.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: UTF-8 -*-
 #
 # generated by wxGlade 0.7.1 on Wed May  8 16:56:24 2019
diff --git a/MAVProxy/modules/mavproxy_paramedit/ph_event.py b/MAVProxy/modules/mavproxy_paramedit/ph_event.py
index 572d106d11..8bf2f75742 100644
--- a/MAVProxy/modules/mavproxy_paramedit/ph_event.py
+++ b/MAVProxy/modules/mavproxy_paramedit/ph_event.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 Event class and enums for Parameter Editor
 
diff --git a/MAVProxy/modules/mavproxy_park.py b/MAVProxy/modules/mavproxy_park.py
index 5e944918c3..0c621fe74b 100644
--- a/MAVProxy/modules/mavproxy_park.py
+++ b/MAVProxy/modules/mavproxy_park.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 park Module
 André Kjellstrup, 2019
diff --git a/MAVProxy/modules/mavproxy_ppp.py b/MAVProxy/modules/mavproxy_ppp.py
index cd1091ab74..f71c7ee7b2 100644
--- a/MAVProxy/modules/mavproxy_ppp.py
+++ b/MAVProxy/modules/mavproxy_ppp.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 A PPP over MAVLink module
 Andrew Tridgell
diff --git a/MAVProxy/modules/mavproxy_proximity.py b/MAVProxy/modules/mavproxy_proximity.py
index ce301726e4..8fef9e43ad 100644
--- a/MAVProxy/modules/mavproxy_proximity.py
+++ b/MAVProxy/modules/mavproxy_proximity.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 Proximity sensor module
diff --git a/MAVProxy/modules/mavproxy_rc.py b/MAVProxy/modules/mavproxy_rc.py
index e24f62cb74..7513b3a998 100644
--- a/MAVProxy/modules/mavproxy_rc.py
+++ b/MAVProxy/modules/mavproxy_rc.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''rc command handling'''
 
 import time, os, struct, sys
diff --git a/MAVProxy/modules/mavproxy_relay.py b/MAVProxy/modules/mavproxy_relay.py
index efd2199f01..6cea569cd9 100644
--- a/MAVProxy/modules/mavproxy_relay.py
+++ b/MAVProxy/modules/mavproxy_relay.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''relay handling module'''
 
 import time
diff --git a/MAVProxy/modules/mavproxy_restserver.py b/MAVProxy/modules/mavproxy_restserver.py
index e15484cdf3..f1747d4e7e 100644
--- a/MAVProxy/modules/mavproxy_restserver.py
+++ b/MAVProxy/modules/mavproxy_restserver.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 '''
 Server Module
diff --git a/MAVProxy/modules/mavproxy_sensors.py b/MAVProxy/modules/mavproxy_sensors.py
index 92bfe4b40e..59f22c3ac3 100644
--- a/MAVProxy/modules/mavproxy_sensors.py
+++ b/MAVProxy/modules/mavproxy_sensors.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''monitor sensor consistancy'''
 
 import time, math
diff --git a/MAVProxy/modules/mavproxy_serial.py b/MAVProxy/modules/mavproxy_serial.py
index 8c421ff348..14c44c9d33 100644
--- a/MAVProxy/modules/mavproxy_serial.py
+++ b/MAVProxy/modules/mavproxy_serial.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''serial_control MAVLink handling'''
 
 import time, os, fnmatch, sys
diff --git a/MAVProxy/modules/mavproxy_signing.py b/MAVProxy/modules/mavproxy_signing.py
index 9c9eac3b15..bf61981c32 100644
--- a/MAVProxy/modules/mavproxy_signing.py
+++ b/MAVProxy/modules/mavproxy_signing.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 control MAVLink2 signing
 '''
diff --git a/MAVProxy/modules/mavproxy_silvus.py b/MAVProxy/modules/mavproxy_silvus.py
index 4353530e19..83f85d85b9 100644
--- a/MAVProxy/modules/mavproxy_silvus.py
+++ b/MAVProxy/modules/mavproxy_silvus.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 silvus radio support
 To use add this in mavinit.scr for vehicle:
diff --git a/MAVProxy/modules/mavproxy_smartcamera/__init__.py b/MAVProxy/modules/mavproxy_smartcamera/__init__.py
index 9c743745ad..460987ed4f 100644
--- a/MAVProxy/modules/mavproxy_smartcamera/__init__.py
+++ b/MAVProxy/modules/mavproxy_smartcamera/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #***************************************************************************
 #                      Copyright Jaime Machuca
 #***************************************************************************
diff --git a/MAVProxy/modules/mavproxy_smartcamera/sc_ExifWriter.py b/MAVProxy/modules/mavproxy_smartcamera/sc_ExifWriter.py
index 35acbcb498..149b467657 100755
--- a/MAVProxy/modules/mavproxy_smartcamera/sc_ExifWriter.py
+++ b/MAVProxy/modules/mavproxy_smartcamera/sc_ExifWriter.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #***************************************************************************
 #                      Copyright 2017 Jaime Machuca
 #***************************************************************************
diff --git a/MAVProxy/modules/mavproxy_speech.py b/MAVProxy/modules/mavproxy_speech.py
index 1278924e2f..a8a2ce4bc8 100644
--- a/MAVProxy/modules/mavproxy_speech.py
+++ b/MAVProxy/modules/mavproxy_speech.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''tune command handling'''
 
 import time, os
diff --git a/MAVProxy/modules/mavproxy_system_time.py b/MAVProxy/modules/mavproxy_system_time.py
index 323d96e0d4..9b8d47c81f 100644
--- a/MAVProxy/modules/mavproxy_system_time.py
+++ b/MAVProxy/modules/mavproxy_system_time.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 System_Time Module
 Peter barker, May 2018
diff --git a/MAVProxy/modules/mavproxy_test.py b/MAVProxy/modules/mavproxy_test.py
index 3fec77ee62..8a12f4585d 100644
--- a/MAVProxy/modules/mavproxy_test.py
+++ b/MAVProxy/modules/mavproxy_test.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''test flight for DCM noise'''
 
 import time, math
diff --git a/MAVProxy/modules/mavproxy_timesync.py b/MAVProxy/modules/mavproxy_timesync.py
index 2ef2c44d53..0a06c55839 100644
--- a/MAVProxy/modules/mavproxy_timesync.py
+++ b/MAVProxy/modules/mavproxy_timesync.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 
diff --git a/MAVProxy/modules/mavproxy_tracker.py b/MAVProxy/modules/mavproxy_tracker.py
index 5f32c91fce..3b110fd667 100644
--- a/MAVProxy/modules/mavproxy_tracker.py
+++ b/MAVProxy/modules/mavproxy_tracker.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 Antenna tracker control module
 This module catches MAVLINK_MSG_ID_GLOBAL_POSITION_INT
diff --git a/MAVProxy/modules/mavproxy_tuneopt.py b/MAVProxy/modules/mavproxy_tuneopt.py
index 2aef5faa27..2fd7190881 100644
--- a/MAVProxy/modules/mavproxy_tuneopt.py
+++ b/MAVProxy/modules/mavproxy_tuneopt.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''tune command handling'''
 
 import time, os
diff --git a/MAVProxy/modules/mavproxy_ublox/__init__.py b/MAVProxy/modules/mavproxy_ublox/__init__.py
index 6f4d14f54d..21fd022546 100644
--- a/MAVProxy/modules/mavproxy_ublox/__init__.py
+++ b/MAVProxy/modules/mavproxy_ublox/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''
 UBX UBLOX Module
 Peter Barker, April 2017
diff --git a/MAVProxy/modules/mavproxy_wp.py b/MAVProxy/modules/mavproxy_wp.py
index 95bbced0e4..5828afaa71 100644
--- a/MAVProxy/modules/mavproxy_wp.py
+++ b/MAVProxy/modules/mavproxy_wp.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 '''waypoint command handling'''
 
 from MAVProxy.modules.lib import mission_item_protocol
diff --git a/MAVProxy/tools/MAVExplorer.py b/MAVProxy/tools/MAVExplorer.py
index 69450a343e..6d97bc85ad 100755
--- a/MAVProxy/tools/MAVExplorer.py
+++ b/MAVProxy/tools/MAVExplorer.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 
diff --git a/MAVProxy/tools/mavflightview.py b/MAVProxy/tools/mavflightview.py
index b5820bba83..5208b63317 100755
--- a/MAVProxy/tools/mavflightview.py
+++ b/MAVProxy/tools/mavflightview.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 view a mission log on a map
diff --git a/scripts/run_flake8.py b/scripts/run_flake8.py
index bc0811c4da..0f23afa8d5 100755
--- a/scripts/run_flake8.py
+++ b/scripts/run_flake8.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 Runs flake8 over Python files which contain a marker indicating