diff --git a/scripts/release/images/ubuntu/prepare.sh b/scripts/release/images/ubuntu/prepare.sh
index 4ce0874..9ec929b 100755
--- a/scripts/release/images/ubuntu/prepare.sh
+++ b/scripts/release/images/ubuntu/prepare.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 set -euo pipefail
 
 CLANG_VERSION=21.1.5