diff --git a/linux/debian/DOCKER/entry_point.sh b/linux/debian/DOCKER/entry_point.sh
index 5f24dd4a..c219c217 100644
--- a/linux/debian/DOCKER/entry_point.sh
+++ b/linux/debian/DOCKER/entry_point.sh
@@ -1,2 +1,2 @@
-#/bin/bash
+#!/usr/bin/env bash
 exec "$@"
diff --git a/linux/debian/postinst b/linux/debian/postinst
index 33b482bd..8fd4f9b3 100755
--- a/linux/debian/postinst
+++ b/linux/debian/postinst
@@ -1,4 +1,4 @@
-#/bin/bash
+#!/usr/bin/env bash
 echo "restarting ckb-next-daemon"
 sudo systemctl daemon-reload
 sudo systemctl enable ckb-next-daemon.service