diff --git a/newday b/newday
index d6586f2..9a64f59 100755
--- a/newday
+++ b/newday
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # This script is intended to be run via cron.
 
 # It creates a folder structure in home for the current date in the following format:
@@ -20,7 +20,7 @@ ROOT_DIR=$HOME/$DIR_NAME
 TODAY_SYM=$HOME/Today
 
 # Present day
-TODAY=$(date --iso-8601)
+TODAY=$(date -I)
 YEAR=$(echo $TODAY | awk -F"-" '{print $1}')
 MONTH=$(echo $TODAY | awk -F"-" '{print $2}')
 DAY=$(echo $TODAY | awk -F"-" '{print $3}')