diff --git a/klatexformula/src/userscripts/applepagesexport.klfuserscript/applepagesexport.py b/klatexformula/src/userscripts/applepagesexport.klfuserscript/applepagesexport.py

index 283c4a8..8415ee8 100644

--- a/klatexformula/src/userscripts/applepagesexport.klfuserscript/applepagesexport.py

+++ b/klatexformula/src/userscripts/applepagesexport.klfuserscript/applepagesexport.py

@@ -1,4 +1,4 @@

-#!/usr/bin/env python

+#!/usr/bin/env python3

 # applepagesexport.py

 #   This file is part of the KLatexFormula Project.

diff --git a/klatexformula/src/userscripts/custom-latex-cmd.klfuserscript/custom-latex-cmd.py b/klatexformula/src/userscripts/custom-latex-cmd.klfuserscript/custom-latex-cmd.py

index 26a7276..68fe698 100644

--- a/klatexformula/src/userscripts/custom-latex-cmd.klfuserscript/custom-latex-cmd.py

+++ b/klatexformula/src/userscripts/custom-latex-cmd.klfuserscript/custom-latex-cmd.py

@@ -1,4 +1,4 @@

-#!/usr/bin/env python

+#!/usr/bin/env python3

 # custom-latex-cmd.py

 #   This file is part of the KLatexFormula Project.

diff --git a/klatexformula/src/userscripts/customtemplate.klfuserscript/customtemplate.py b/klatexformula/src/userscripts/customtemplate.klfuserscript/customtemplate.py

index 654719e..0d830cb 100644

--- a/klatexformula/src/userscripts/customtemplate.klfuserscript/customtemplate.py

+++ b/klatexformula/src/userscripts/customtemplate.klfuserscript/customtemplate.py

@@ -1,4 +1,4 @@

-#!/usr/bin/env python

+#!/usr/bin/env python3

 # customtemplate.py

 #   This file is part of the KLatexFormula Project.

diff --git a/klatexformula/src/userscripts/dvipng-backend.klfuserscript/dvipng-backend.py b/klatexformula/src/userscripts/dvipng-backend.klfuserscript/dvipng-backend.py

index 2e6b42b..461833c 100644

--- a/klatexformula/src/userscripts/dvipng-backend.klfuserscript/dvipng-backend.py

+++ b/klatexformula/src/userscripts/dvipng-backend.klfuserscript/dvipng-backend.py

@@ -1,4 +1,4 @@

-#!/usr/bin/env python

+#!/usr/bin/env python3

 # dvipng-backend.py

 #   This file is part of the KLatexFormula Project.

diff --git a/klatexformula/src/userscripts/gif-convert.klfuserscript/gif-convert.py b/klatexformula/src/userscripts/gif-convert.klfuserscript/gif-convert.py

index 6b81a2e..ad14c46 100644

--- a/klatexformula/src/userscripts/gif-convert.klfuserscript/gif-convert.py

+++ b/klatexformula/src/userscripts/gif-convert.klfuserscript/gif-convert.py

@@ -1,4 +1,4 @@

-#!/usr/bin/env python

+#!/usr/bin/env python3

 # gif-convert.py

 #   This file is part of the KLatexFormula Project.

diff --git a/klatexformula/src/userscripts/imagemagickeffect.klfuserscript/imagemagickeffect.py b/klatexformula/src/userscripts/imagemagickeffect.klfuserscript/imagemagickeffect.py

index c3324f6..8f75e87 100644

--- a/klatexformula/src/userscripts/imagemagickeffect.klfuserscript/imagemagickeffect.py

+++ b/klatexformula/src/userscripts/imagemagickeffect.klfuserscript/imagemagickeffect.py

@@ -1,3 +1,4 @@

+#!/usr/bin/env python3

 import sys

 import os

 import shlex

diff --git a/klatexformula/src/userscripts/inkscapeformats.klfuserscript/inkscapeformats.py b/klatexformula/src/userscripts/inkscapeformats.klfuserscript/inkscapeformats.py

index 5405d86..bb534ab 100644

--- a/klatexformula/src/userscripts/inkscapeformats.klfuserscript/inkscapeformats.py

+++ b/klatexformula/src/userscripts/inkscapeformats.klfuserscript/inkscapeformats.py

@@ -1,4 +1,4 @@

-#!/usr/bin/env python

+#!/usr/bin/env python3

 # inkscapeformats.py

 #   This file is part of the KLatexFormula Project.

diff --git a/klatexformula/src/userscripts/klffeynmf.klfuserscript/klffeynmf.py b/klatexformula/src/userscripts/klffeynmf.klfuserscript/klffeynmf.py

index ff4dcf6..e6f3996 100644

--- a/klatexformula/src/userscripts/klffeynmf.klfuserscript/klffeynmf.py

+++ b/klatexformula/src/userscripts/klffeynmf.klfuserscript/klffeynmf.py

@@ -1,4 +1,4 @@

-#!/usr/bin/env python

+#!/usr/bin/env python3

 # klffeynmf.py

 #   This file is part of the KLatexFormula Project.

diff --git a/klatexformula/src/userscripts/noiseeffect.klfuserscript/noiseeffect.py b/klatexformula/src/userscripts/noiseeffect.klfuserscript/noiseeffect.py

index 4ebd062..a0b909e 100644

--- a/klatexformula/src/userscripts/noiseeffect.klfuserscript/noiseeffect.py

+++ b/klatexformula/src/userscripts/noiseeffect.klfuserscript/noiseeffect.py

@@ -1,3 +1,4 @@

+#!/usr/bin/env python3

 import sys

 import os

 import subprocess

diff --git a/klatexformula/src/userscripts/pyklfuserscript/__init__.py b/klatexformula/src/userscripts/pyklfuserscript/__init__.py

index d4a9f9d..1824155 100644

--- a/klatexformula/src/userscripts/pyklfuserscript/__init__.py

+++ b/klatexformula/src/userscripts/pyklfuserscript/__init__.py

@@ -1,3 +1,4 @@

+#!/usr/bin/env python3

 from __future__ import print_function

diff --git a/klatexformula/src/userscripts/runpdflatex.klfuserscript/runpdflatex.py b/klatexformula/src/userscripts/runpdflatex.klfuserscript/runpdflatex.py

index 12a8d7a..8022207 100644

--- a/klatexformula/src/userscripts/runpdflatex.klfuserscript/runpdflatex.py

+++ b/klatexformula/src/userscripts/runpdflatex.klfuserscript/runpdflatex.py

@@ -1,4 +1,4 @@

-#!/usr/bin/env python

+#!/usr/bin/env python3

 # runpdflatex.py

 #   This file is part of the KLatexFormula Project.

diff --git a/klatexformula/src/userscripts/svg-dvisvgm.klfuserscript/svg-dvisvgm.py b/klatexformula/src/userscripts/svg-dvisvgm.klfuserscript/svg-dvisvgm.py

index c8c97bb..ebebc97 100644

--- a/klatexformula/src/userscripts/svg-dvisvgm.klfuserscript/svg-dvisvgm.py

+++ b/klatexformula/src/userscripts/svg-dvisvgm.klfuserscript/svg-dvisvgm.py

@@ -1,4 +1,4 @@

-#!/usr/bin/env python

+#!/usr/bin/env python3

 # svg-dvisvgm.py

 #   This file is part of the KLatexFormula Project.