diff --git a/publishing/create_optimized_email.sh b/publishing/create_optimized_email.sh
index 9a0f9766..12a346fc 100755
--- a/publishing/create_optimized_email.sh
+++ b/publishing/create_optimized_email.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 source utils.sh