diff --git a/schily-2020-09-04.tar.bz2 b/schily-2020-09-04.tar.bz2
deleted file mode 100644
index f6df2e3..0000000
--- a/schily-2020-09-04.tar.bz2
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:12604215427c2a3f1fefc41ced38574fb11f8d978dd0144d9114e301701699a0
-size 4857238
diff --git a/schily-2020-09-22.tar.bz2 b/schily-2020-09-22.tar.bz2
new file mode 100644
index 0000000..f703581
--- /dev/null
+++ b/schily-2020-09-22.tar.bz2
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:832bb7686c60268f077501ffaac725ed4430e3d8cc6ead5f3ead04b814566c27
+size 4806893
diff --git a/schily.changes b/schily.changes
index 9c984a3..73d39c1 100644
--- a/schily.changes
+++ b/schily.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Wed Sep 23 09:38:47 UTC 2020 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 2020.09.22
+  * SCCS: delta now supports to handle nul bytes in the
+    diff(1) output.
+  * SCCS: delta now supports nul bytes in the new version of the
+    input file if processing SCCSv6 history files.
+  * SCCS: delta now by default uses `fsdiff` instead of `bdiff`.
+  * SCCS: delta, if called as `delta -d ...`, now calls diff(1)
+    with the option -a.
+
 -------------------------------------------------------------------
 Sat Sep  5 12:53:54 UTC 2020 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/schily.spec b/schily.spec
index d562494..351eec6 100644
--- a/schily.spec
+++ b/schily.spec
@@ -17,14 +17,14 @@
 
 
 # grep -Pir 'define\s+VERSION|strvers'
-%global box_version	2020.09.04
+%global box_version	2020.09.22
 %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 1.8
 %global ved_version     1.7
-%define rver	2020-09-04
+%define rver	2020-09-22
 
 Name:           schily
 Version:        %box_version