diff --git a/src/create_ocaml.py b/src/create_ocaml.py
index 0445d1a..d1985b5 100755
--- a/src/create_ocaml.py
+++ b/src/create_ocaml.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/create_python.py b/src/create_python.py
index 5954d8d..8090458 100755
--- a/src/create_python.py
+++ b/src/create_python.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/ezfio-head.py b/src/ezfio-head.py
index 71e85c1..487aa5d 100644
--- a/src/ezfio-head.py
+++ b/src/ezfio-head.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/groups.py b/src/groups.py
index 89a326d..7ecca0a 100644
--- a/src/groups.py
+++ b/src/groups.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/groups_templates.py b/src/groups_templates.py
index ea4b049..034cdc3 100644
--- a/src/groups_templates.py
+++ b/src/groups_templates.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/libezfio_file.irp.f b/src/libezfio_file.irp.f
index f43f5fa..9dbdf10 100644
--- a/src/libezfio_file.irp.f
+++ b/src/libezfio_file.irp.f
@@ -181,7 +181,7 @@ subroutine ezfio_finish()
 ! Close all open buffers
  END_DOC
  close(libezfio_iunit)
- BEGIN_SHELL [ /usr/bin/env python2 ]
+ BEGIN_SHELL [ /usr/bin/env python3 ]
 import os
 from zlib import crc32
 print '  call irp_finalize_%s'%(str(abs(crc32(os.getcwd()))))
diff --git a/src/libezfio_groups.irp.f b/src/libezfio_groups.irp.f
index 9bcc9ab..2497682 100644
--- a/src/libezfio_groups.irp.f
+++ b/src/libezfio_groups.irp.f
@@ -22,7 +22,7 @@
 !   31062 Toulouse Cedex 4      
 !   scemama@irsamc.ups-tlse.fr
 
-BEGIN_SHELL [ /usr/bin/env python2 ]
+BEGIN_SHELL [ /usr/bin/env python3 ]
 import groups
 END_SHELL
 
diff --git a/src/libezfio_util.irp.f b/src/libezfio_util.irp.f
index 23ff0f5..0b3cdc8 100644
--- a/src/libezfio_util.irp.f
+++ b/src/libezfio_util.irp.f
@@ -137,7 +137,7 @@ subroutine libezfio_closez(filename,mode)
 end
 
 
-BEGIN_SHELL [ /usr/bin/env python2 ]
+BEGIN_SHELL [ /usr/bin/env python3 ]
 from f_types import format, t_short
 
 
diff --git a/src/read_config.py b/src/read_config.py
index 3508c9c..62d314e 100644
--- a/src/read_config.py
+++ b/src/read_config.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/test.py b/src/test.py
index d781fb7..6621bd4 100755
--- a/src/test.py
+++ b/src/test.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/version b/version
index e7a9389..68b0096 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-VERSION=1.6.1
+VERSION=2.0