diff --git a/PKGBUILD b/PKGBUILD
index 6118098..e6d33c1 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -23,7 +23,7 @@ _gnulib_commit='be584c56eb1311606e5ea1a36363b97bddb6eed3'
 _unifont_ver='13.0.06'
 _pkgver=2.06
 pkgver=${_pkgver/-/}
-pkgrel=0
+pkgrel=1
 url='https://www.gnu.org/software/grub/'
 arch=('x86_64')
 license=('GPL3')
diff --git a/grub.install b/grub.install
index 7c4df5b..c268996 100644
--- a/grub.install
+++ b/grub.install
@@ -7,16 +7,14 @@ post_upgrade() {
     mv /boot/grub/grub.cfg.pacsave /boot/grub/grub.cfg
   fi
 
-  # https://md.archlinux.org/F1JuYj5xQtWyhvH8_ilErg#
+  # return if old package version greater 2:2.06-0...
+  (( $(vercmp $2 '2:2.06-0') > 0 )) && return
+
   if [[ -e /sys/firmware/efi/efivars ]]; then
     cat <<EOM
-:: Recent versions of grub may fail to boot with secure boot enabled. The
-   message will look like this:
-    > error: verification requested but nobody cares:
-    > (hd0,gpt2)/grub/x86_64-efi/normal.mod
-    > Entering rescue mode...
-   Handle installation to UEFI with care and be prepared!
-   For details see: https://md.archlinux.org/F1JuYj5xQtWyhvH8_ilErg#
+:: Grub does no longer support side-loading modules when secure boot is
+   enabled. Thus booting will fail, unless you have an efi executable
+   'grubx64.efi' with bundled modules.
 EOM
   fi
 }