diff --git a/contrib/boobank_indicator/boobank_indicator/boobank_indicator.py b/contrib/boobank_indicator/boobank_indicator/boobank_indicator.py
index 8417f4310d85de969d45ea774eca2ed96347b4bf..9526e5eb3acc656421e537fd93e6468d56e6999d 100644
--- a/contrib/boobank_indicator/boobank_indicator/boobank_indicator.py
+++ b/contrib/boobank_indicator/boobank_indicator/boobank_indicator.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import logging
 import os
diff --git a/contrib/downloadboob/downloadboob.py b/contrib/downloadboob/downloadboob.py
index d59c501feee207ba8663fa3cc1b3152ee154de1c..f8ec20989402c90d8666782f1cd9b6bd480895c2 100755
--- a/contrib/downloadboob/downloadboob.py
+++ b/contrib/downloadboob/downloadboob.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 # Copyright(C) 2012 Alexandre Flament
diff --git a/contrib/hds/export.py b/contrib/hds/export.py
index a8802de99b1f15b607ea22a882da4473c8c3af40..ea8daa65403a4a69a52d85c892d4cef72b9dec5e 100755
--- a/contrib/hds/export.py
+++ b/contrib/hds/export.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 # Copyright(C) 2011 Romain Bignon
diff --git a/contrib/munin/boobank-munin b/contrib/munin/boobank-munin
index 1fddd06a91166b198851f4b9ec54c57a867ba408..ce5428d96441c673355bb8acccbf28f35a802234 100755
--- a/contrib/munin/boobank-munin
+++ b/contrib/munin/boobank-munin
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 # vim: ft=python et softtabstop=4 cinoptions=4 shiftwidth=4 ts=4 ai
 
diff --git a/contrib/munin/weboob-generic b/contrib/munin/weboob-generic
index 7ca20eeb13ec0c02e7efe87d5527bbb8a4cf95a0..bc25703e65569b42dbb011ee51012581904e56ba 100755
--- a/contrib/munin/weboob-generic
+++ b/contrib/munin/weboob-generic
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 # vim: ft=python et softtabstop=4 cinoptions=4 shiftwidth=4 ts=4 ai
 
diff --git a/contrib/rboorrent-download/rboorrent-download.py b/contrib/rboorrent-download/rboorrent-download.py
index afa430772edd0a1626b4b6dff5c2c12536e7bf8c..b211a0f6290dfac0412a45a16e26ac10391f6432 100755
--- a/contrib/rboorrent-download/rboorrent-download.py
+++ b/contrib/rboorrent-download/rboorrent-download.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 # Copyright(C) 2017 Matthieu Weber
diff --git a/contrib/videoob_web/videoob-webserver b/contrib/videoob_web/videoob-webserver
index 5478ef83139640c14bc3d3877bedb56a13f15add..ece9b8dd7e53c46e3747add364142dd8df26b782 100755
--- a/contrib/videoob_web/videoob-webserver
+++ b/contrib/videoob_web/videoob-webserver
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 # vim: ft=python et softtabstop=4 cinoptions=4 shiftwidth=4 ts=4 ai
 
diff --git a/docs/source/genapi.py b/docs/source/genapi.py
index e0c0492764badc338882a63b2f3c1c69f2eaa9e3..2dea4a9f32a37c05fdbe4f622c4b38872102c8a1 100755
--- a/docs/source/genapi.py
+++ b/docs/source/genapi.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import os
 
diff --git a/tools/boilerplate/boilerplate.py b/tools/boilerplate/boilerplate.py
index 15701374e1e0632dd5655fc8636b175b3a85d52e..423a88c63a648d85b1a85af9be43cd954f29f7c9 100755
--- a/tools/boilerplate/boilerplate.py
+++ b/tools/boilerplate/boilerplate.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 # Copyright(C) 2013-2019      Laurent Bachelier, Sébastien Jean
diff --git a/tools/boilerplate/boilerplate_data/recipes.py b/tools/boilerplate/boilerplate_data/recipes.py
index 81e70a6000457f31deff2d29b845efab124d4f74..5bc77b0ba9f2293d90f7444b7346d446966b44f7 100644
--- a/tools/boilerplate/boilerplate_data/recipes.py
+++ b/tools/boilerplate/boilerplate_data/recipes.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python
 # -*- coding: utf-8 -*-
 
 # Copyright(C) 2013-2019      Laurent Bachelier, Sébastien Jean
diff --git a/tools/boilerplate/recipe.py b/tools/boilerplate/recipe.py
index 9f3324923bf145a2694deccb891823528d781ee0..ef58b6e1e07466634a0f7ec3b6807c90f0177f98 100644
--- a/tools/boilerplate/recipe.py
+++ b/tools/boilerplate/recipe.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python
 # -*- coding: utf-8 -*-
 
 # Copyright(C) 2013-2019      Laurent Bachelier, Sébastien Jean