diff --git a/meta-digi-arm/recipes-bsp/libubootenv/libubootenv_%.bbappend b/meta-digi-arm/recipes-bsp/libubootenv/libubootenv_%.bbappend
index 3a0ee0f8d..15ffa5c44 100644
--- a/meta-digi-arm/recipes-bsp/libubootenv/libubootenv_%.bbappend
+++ b/meta-digi-arm/recipes-bsp/libubootenv/libubootenv_%.bbappend
@@ -1,4 +1,4 @@
-# Copyright (C) 2021-2023 Digi International Inc.
+# Copyright (C) 2021-2024 Digi International Inc.
 
 FILESEXTRAPATHS:prepend := "${THISDIR}/${BPN}:"
 
@@ -83,6 +83,8 @@ pkg_postinst_ontarget:${PN}() {
 			-e "s/##NBLOCKS##/${NBLOCKS}/g" \
 			${CONFIG_FILE}
 	fi
+	# Flush the file system to have the changes written
+	sync ${CONFIG_FILE}
 }
 
 inherit ${@bb.utils.contains("IMAGE_FEATURES", "read-only-rootfs", "remove-pkg-postinst-ontarget", "", d)}