diff --git a/sh/ghmd b/sh/ghmd
index d86b296..2420816 100755
--- a/sh/ghmd
+++ b/sh/ghmd
@@ -1,4 +1,4 @@
-#!/usr/bin/env zsh
+#!/usr/bin/env sh
 # ghmd - format GitHub markdown
 # via: https://leahneukirchen.org/dotfiles/.zshrc
 # example: ghmd < README.md > README.html