diff --git a/util/dogfood.sh b/util/dogfood.sh
old mode 100644
new mode 100755
index 51dd465a25d..e98d18c40d5
--- a/util/dogfood.sh
+++ b/util/dogfood.sh
@@ -1,3 +1,4 @@
+#!/bin/sh
 rm -rf target*/*so
 cargo build --lib && cp -R target target_recur && cargo rustc -- -Zextra-plugins=clippy -Ltarget_recur/debug   -Dclippy || exit 1
 rm -rf target_recur