diff --git a/large_mac_iso.patch b/large_mac_iso.patch
deleted file mode 100644
index 8008d27..0000000
--- a/large_mac_iso.patch
+++ /dev/null
@@ -1,39 +0,0 @@
-From: Adam Majer <amajer@suse.com>
-Date: 2020-05-11 11:47:23+0000
-
-Fix an integer overflow in partition table calculation when chrp-boot
-is enabled and a large ISO image is created.
-
-Index: cdrtools-3.02/mkisofs/mac_label.c
-===================================================================
---- cdrtools-3.02.orig/mkisofs/mac_label.c
-+++ cdrtools-3.02/mkisofs/mac_label.c
-@@ -67,8 +67,8 @@ gen_prepboot_label(ml)
- {
- 	struct directory_entry *de;
- 	int		i = 0;
--	int		block;
--	int		size;
-+	unsigned block;
-+	unsigned size;
- 	MacLabel	*mac_label = (MacLabel *) ml;
- 
- 	if (verbose > 1) {
-@@ -98,7 +98,7 @@ gen_prepboot_label(ml)
- 		mac_label->image[i].startSect[2] = 0;
- 		mac_label->image[i].startSect[3] = 0;
- 
--		size = (last_extent - session_start) * 2048 / 512;
-+		size = (unsigned)(last_extent - session_start) * (2048 / 512);
- 		mac_label->image[i].size[0] = size & 0xff;
- 		mac_label->image[i].size[1] = (size >> 8) & 0xff;
- 		mac_label->image[i].size[2] = (size >> 16) & 0xff;
-@@ -115,7 +115,7 @@ gen_prepboot_label(ml)
- 			/* NOTREACHED */
- 		}
- 		/* get size and block in 512-byte blocks */
--		block = get_733(de->isorec.extent) * 2048 / 512;
-+		block = get_733(de->isorec.extent) * (2048 / 512);
- 		size = get_733(de->isorec.size) / 512 + 1;
- 		fprintf(stderr, _("PReP boot partition %d is \"%s\"\n"),
- 			i + 1, prep_boot_image[i - use_chrp_boot]);
diff --git a/schily-2020-05-11.tar.bz2 b/schily-2020-05-11.tar.bz2
deleted file mode 100644
index df916e5..0000000
--- a/schily-2020-05-11.tar.bz2
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:463d93b1f8c20a6cba703c1ada846904f24acf03ec7f3b26c36ee8453c618081
-size 4783976
diff --git a/schily-2020-05-25.tar.bz2 b/schily-2020-05-25.tar.bz2
new file mode 100644
index 0000000..4a1154d
--- /dev/null
+++ b/schily-2020-05-25.tar.bz2
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bf8f517dd82bf0e38ab528be1d37e2358a1dcc5d374c031d0de21ea496462aa9
+size 4794851
diff --git a/schily.changes b/schily.changes
index d0a0834..fc5fe17 100644
--- a/schily.changes
+++ b/schily.changes
@@ -1,3 +1,31 @@
+-------------------------------------------------------------------
+Tue May 26 11:32:10 UTC 2020 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 2020.05.25
+  * mkisofs: Fixed an integer overflow bug in mac_label.c with
+    Apple -chrp boot.
+  * star: The subst command for pax now supports the \1, \2, ...
+    escapes for \(...\) selections in the from pattern, like it
+    is used by sed(1).
+  * star: A new subst option -pax-s has been added that supports
+    sed(1) like substitutions. The old option -s continues to
+    support change(1) like substititions.
+  * SCCS: A new option -X0 has been introduced to allow to use
+    nul byte separated file names on stdin when using the file
+    argument "-".
+  * SCCS: The commands sccslog and sccscvt now also support the
+    argument "-" as a directive to read filenames from stdin.
+  * SCCS: `sccs init` now by default creates an empty changeset
+    history file with release 1.0 as
+    $SRC_ROOT/.sccs/SCCS/s.changeset This signals SCCS to work in
+    project mode where a group of files is managed together and
+    the version 1.0 allows the first proect release to become
+    1.1.
+  * SCCS: `sccs init -s` now allows to initialize a directory
+    tree without creating a $SRC_ROOT/.sccs/SCCS/s.changeset
+    history file. This signals SCCS to work in single file mode.
+- Drop large_mac_iso.patch (merged)
+
 -------------------------------------------------------------------
 Wed May 13 09:21:22 UTC 2020 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/schily.spec b/schily.spec
index 08f6c28..385ef9b 100644
--- a/schily.spec
+++ b/schily.spec
@@ -17,14 +17,14 @@
 
 
 # grep -Pir 'define\s+VERSION|strvers'
-%global box_version	2020.05.11
+%global box_version	2020.05.25
 %global cdr_version	3.02~a10
 %global sccs_version	5.09
 %global smake_version	1.3
 %global star_version	1.6.1
 %global libfind_version 1.7
 %global ved_version     1.7
-%define rver	2020-05-11
+%define rver	2020-05-25
 
 Name:           schily
 Version:        %box_version
@@ -41,7 +41,6 @@ Source1:        README-FIRST
 # and submit patches upstream FIRST (cc to the bspkg maintainer perhaps).
 Patch1:         iconv-name.diff
 Patch2:         schily-2018-05-25_star_configuration.patch
-Patch3:         large_mac_iso.patch
 BuildRequires:  autoconf
 BuildRequires:  fdupes
 BuildRequires:  gcc-c++
@@ -970,34 +969,13 @@ fi
 %_mandir/man1/rcs2sccs.1*
 %_mandir/man1/rmdel.1*
 %_mandir/man1/sact.1*
-%_mandir/man1/sccs-admin.1*
-%_mandir/man1/sccs-cdc.1*
-%_mandir/man1/sccs-comb.1*
-%_mandir/man1/sccs-cvt.1*
-%_mandir/man1/sccs-delta.1*
-%_mandir/man1/sccs-get.1*
-%_mandir/man1/sccs-help.1*
-%_mandir/man1/sccs-log.1*
-%_mandir/man1/sccs-prs.1*
-%_mandir/man1/sccs-prt.1*
-%_mandir/man1/sccs-rcs2sccs.1*
-%_mandir/man1/sccs-rmdel.1*
-%_mandir/man1/sccs-sact.1*
-%_mandir/man1/sccs-sccsdiff.1*
-%_mandir/man1/sccs-unget.1*
-%_mandir/man1/sccs-val.1*
-%_mandir/man1/sccs.1*
-%_mandir/man1/sccscvt.1*
-%_mandir/man1/sccsdiff.1*
-%_mandir/man1/sccslog.1*
-%_mandir/man1/sccspatch.1*
+%_mandir/man1/sccs*.1*
 %_mandir/man1/unget.1*
 %_mandir/man1/val.1*
 %_mandir/man1/vc.1*
 %_mandir/man1/what.1*
 %_mandir/man5/changeset.5*
-%_mandir/man5/sccschangeset.5*
-%_mandir/man5/sccsfile.5*
+%_mandir/man5/sccs*.5*
 
 %files -n schily-mt
 %license CDDL.Schily.txt