diff --git a/processing/post/vtk_addGridData.py b/processing/post/vtk_addGridData.py
index e0c274dc7..315071a4b 100755
--- a/processing/post/vtk_addGridData.py
+++ b/processing/post/vtk_addGridData.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python3
 # -*- coding: UTF-8 no BOM -*-
 
 import os,vtk
diff --git a/processing/post/vtk_addPointcloudData.py b/processing/post/vtk_addPointcloudData.py
index 3937413c6..d75eb97b4 100755
--- a/processing/post/vtk_addPointcloudData.py
+++ b/processing/post/vtk_addPointcloudData.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python3
 # -*- coding: UTF-8 no BOM -*-
 
 import os,vtk
diff --git a/processing/post/vtk_addRectilinearGridData.py b/processing/post/vtk_addRectilinearGridData.py
index 9ec384e4d..83a1451a0 100755
--- a/processing/post/vtk_addRectilinearGridData.py
+++ b/processing/post/vtk_addRectilinearGridData.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python3
 # -*- coding: UTF-8 no BOM -*-
 
 import os,vtk
diff --git a/processing/post/vtk_pointcloud.py b/processing/post/vtk_pointcloud.py
index 54f02d300..a9ce1f81f 100755
--- a/processing/post/vtk_pointcloud.py
+++ b/processing/post/vtk_pointcloud.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python3
 # -*- coding: UTF-8 no BOM -*-
 
 import os,sys,vtk
diff --git a/processing/post/vtk_rectilinearGrid.py b/processing/post/vtk_rectilinearGrid.py
index d01d118cb..c94f44228 100755
--- a/processing/post/vtk_rectilinearGrid.py
+++ b/processing/post/vtk_rectilinearGrid.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python3
 # -*- coding: UTF-8 no BOM -*-
 
 import os,sys,vtk