diff --git a/d b/d
index 9884a6c..73bf5c5 100755
--- a/d
+++ b/d
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 cd $(dirname $0)
diff --git a/extract.sh b/extract.sh
index c1b2fb0..28cda82 100755
--- a/extract.sh
+++ b/extract.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 echo "Usage: ./extract.sh all|<board_name> <peripheral>"
 
diff --git a/merge_regs.py b/merge_regs.py
index f8dbf58..8fbd4c2 100644
--- a/merge_regs.py
+++ b/merge_regs.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 import xmltodict
 import yaml
 import re