diff --git a/tools/closest_color.py b/tools/closest_color.py
old mode 100644
new mode 100755
index 1417129..f1ce399
--- a/tools/closest_color.py
+++ b/tools/closest_color.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 import sys
 
 from colormath.color_conversions import convert_color
diff --git a/tools/swatch.fish b/tools/swatch.fish
old mode 100644
new mode 100755
index ba999d2..d53a123
--- a/tools/swatch.fish
+++ b/tools/swatch.fish
@@ -1,3 +1,5 @@
+#!/usr/bin/env fish
+
 set -l height_in_lines 2
 
 set -l width_in_chars (math --scale=0 $height_in_lines x 2.5) # 2.5 = ratio