diff --git a/Software/chamlog.py b/Software/chamlog.py
old mode 100644
new mode 100755
index 4ac2582..9394630
--- a/Software/chamlog.py
+++ b/Software/chamlog.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 #
 # Command line tool to analyze binary dump files from the Chameleon
 # Authors: Simon K. (simon.kueppers@rub.de)
diff --git a/Software/chamtool.py b/Software/chamtool.py
old mode 100644
new mode 100755
index 1cc272a..6f97a96
--- a/Software/chamtool.py
+++ b/Software/chamtool.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 #
 # Command line tool to control the Chameleon through command line
 # Authors: Simon K. (simon.kueppers@rub.de)