diff --git a/key_decoder.py b/key_decoder.py
old mode 100644
new mode 100755
index a92bde4..74cf128
--- a/key_decoder.py
+++ b/key_decoder.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 import cadquery as cq
 from cadquery import exporters
 
diff --git a/snap_on_templates.py b/snap_on_templates.py
old mode 100644
new mode 100755
index de69af0..ddf784b
--- a/snap_on_templates.py
+++ b/snap_on_templates.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 import cadquery as cq
 from cadquery import exporters