diff --git a/user_space/update_sdcard.sh b/user_space/update_sdcard.sh
index 8ed4d38..b636e05 100755
--- a/user_space/update_sdcard.sh
+++ b/user_space/update_sdcard.sh
@@ -189,5 +189,5 @@ sync
 
 cd $home_dir
 
-umount $SDCARD_DIR/BOOT/
-umount $SDCARD_DIR/rootfs/
+sudo umount $SDCARD_DIR/BOOT/
+sudo umount $SDCARD_DIR/rootfs/