diff --git a/grub2/.signature b/grub2/.signature
index 70381b2d1..cd80e3903 100644
--- a/grub2/.signature
+++ b/grub2/.signature
@@ -1,8 +1,9 @@
 untrusted comment: verify with /etc/ports/opt.pub
-RWSE3ohX2g5d/Tugij7l2s9daXoMEGg5Cy3nycSfNulx6n7vTBGMe5cdCBG7Obw12n/Dfde5JQF/Zo34UffGVyH4qiOlEPjsvQ0=
-SHA256 (Pkgfile) = fd3e73c60329c5501cf7591a586ab26200666864cb9a063b56e459170f7ffe56
+RWSE3ohX2g5d/cozKRKF34ScNUh5gcMmQLYXN+Yxhw5NwdwBJKbGRJNA4S5lrn+PfXqV9/3zIMwBONSVCWpgRQj7YnR4Wt8djgY=
+SHA256 (Pkgfile) = be46c0b058e3d19f42d6417e2d9ab898e2d508ed8f58aa5b0166c1ca332faeab
 SHA256 (.footprint) = 3dcb92cc7537b4647fada7f2851b521bb7e6bffb6ddaa9110e6572f39dc22d34
 SHA256 (grub-2.06.tar.xz) = b79ea44af91b93d17cd3fe80bdae6ed43770678a9a5ae192ccea803ebb657ee1
 SHA256 (unifont-9.0.06.pcf.gz) = 6d23e82ea3fd3d79849d675c0c30129b62a3973a83b4cdc05f9994efef773b86
 SHA256 (grub2-tweaks.diff) = 7b1b96a5d0d97bf671b34e3ab12e88a95ed343cbf7a548209b32bc86b4aeba39
 SHA256 (grub.cfg.sample) = c2e72228c1dd150f727e8d611d6f14956080ce078651b03eb14fcf65b0917dda
+SHA256 (csum_seed.diff) = ec7b142af05f0bdf3b923e0f3c365592760fc9c10896e9a23899f96e59ad5bfb
diff --git a/grub2/Pkgfile b/grub2/Pkgfile
index b227ee5e7..beb09e081 100644
--- a/grub2/Pkgfile
+++ b/grub2/Pkgfile
@@ -5,16 +5,17 @@
 
 name=grub2
 version=2.06
-release=3
+release=4
 source=(http://ftp.gnu.org/gnu/grub/grub-$version.tar.xz \
 	http://jaeger.morpheus.net/linux/crux/files/unifont-9.0.06.pcf.gz \
-	$name-tweaks.diff grub.cfg.sample)
+	$name-tweaks.diff grub.cfg.sample csum_seed.diff)
 
 build() {
 	export CFLAGS="${CFLAGS} -Wno-error -Os"
 	export PYTHON=python3
 	cd grub-$version
 	patch -p1 -i $SRC/$name-tweaks.diff
+	patch -p1 -i $SRC/csum_seed.diff
 
 	./configure --prefix=/usr \
 		--sysconfdir=/etc \
diff --git a/grub2/csum_seed.diff b/grub2/csum_seed.diff
new file mode 100644
index 000000000..0b33ec8d9
--- /dev/null
+++ b/grub2/csum_seed.diff
@@ -0,0 +1,29 @@
+diff --git a/grub-core/fs/ext2.c b/grub-core/fs/ext2.c
+index e7dd78e..4953a15 100644
+--- a/grub-core/fs/ext2.c
++++ b/grub-core/fs/ext2.c
+@@ -103,6 +103,7 @@ GRUB_MOD_LICENSE ("GPLv3+");
+ #define EXT4_FEATURE_INCOMPAT_64BIT		0x0080
+ #define EXT4_FEATURE_INCOMPAT_MMP		0x0100
+ #define EXT4_FEATURE_INCOMPAT_FLEX_BG		0x0200
++#define EXT4_FEATURE_INCOMPAT_CSUM_SEED		0x2000
+ #define EXT4_FEATURE_INCOMPAT_ENCRYPT          0x10000
+ 
+ /* The set of back-incompatible features this driver DOES support. Add (OR)
+@@ -123,10 +124,15 @@ GRUB_MOD_LICENSE ("GPLv3+");
+  * mmp:            Not really back-incompatible - was added as such to
+  *                 avoid multiple read-write mounts. Safe to ignore for this
+  *                 RO driver.
++ * checksum seed:  Not really back-incompatible - was added to allow tools
++ *                 such as tune2fs to change the UUID on a mounted metadata
++ *                 checksummed filesystem. Safe to ignore for now since the
++ *                 driver doesn't support checksum verification. However, it
++ *                 has to be removed from this list if the support is added later.
+  */
+ #define EXT2_DRIVER_IGNORED_INCOMPAT ( EXT3_FEATURE_INCOMPAT_RECOVER \
+-				     | EXT4_FEATURE_INCOMPAT_MMP)
+-
++				     | EXT4_FEATURE_INCOMPAT_MMP \
++				     | EXT4_FEATURE_INCOMPAT_CSUM_SEED)
+ 
+ #define EXT3_JOURNAL_MAGIC_NUMBER	0xc03b3998U