diff --git a/permissions.sh b/permissions.sh
index f66b6f6..24e776f 100755
--- a/permissions.sh
+++ b/permissions.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 chmod u=rwX,g=rX,o=rX -R conf core
 chmod u=rwX,g=rwX,o=rwX \
diff --git a/reset.sh b/reset.sh
index ad53f8c..99b4b3c 100755
--- a/reset.sh
+++ b/reset.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 rm -f data/knot/*/*.mdb
 rm -f data/knot/keys/keys/*.pem
diff --git a/setup-xoq.sh b/setup-xoq.sh
index 4721a79..3e52fe8 100755
--- a/setup-xoq.sh
+++ b/setup-xoq.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ENGINE="podman" # "podman" or "docker"