diff --git a/misc/packaging/acrn-board-inspector.postinst b/misc/packaging/acrn-board-inspector.postinst
index 35fe2c4d9..11240c13f 100644
--- a/misc/packaging/acrn-board-inspector.postinst
+++ b/misc/packaging/acrn-board-inspector.postinst
@@ -2,6 +2,8 @@
 #* Copyright (c) 2020 Intel Corporation SPDX-License-Identifier: BSD-3-Clause
 # postinst script for acrn-board-inspector
 
+pip3 install xmlschema
+
 set -e
 
 filename='/etc/default/grub'