diff --git a/scripts/obtain/dotnet-install.sh b/scripts/obtain/dotnet-install.sh
index d5e853a04..46980a645 100755
--- a/scripts/obtain/dotnet-install.sh
+++ b/scripts/obtain/dotnet-install.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 # Copyright (c) .NET Foundation and contributors. All rights reserved.
 # Licensed under the MIT license. See LICENSE file in the project root for full license information.
 #