diff --git a/src/addTable.py b/src/addTable.py
old mode 100644
new mode 100755
index 103f292dd..8ceda7ae8
--- a/src/addTable.py
+++ b/src/addTable.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 import sys
 from fontTools.ttLib import TTFont
 from fontTools.ttLib.tables.DefaultTable import DefaultTable
diff --git a/src/justify.py b/src/justify.py
old mode 100644
new mode 100755
index db2fb7010..8458d2ec6
--- a/src/justify.py
+++ b/src/justify.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 import gi
 
 gi.require_version("Gtk", "3.0")