diff --git a/0001-partition-Byte-swap-partition_entries_lba-in-test.patch b/0001-partition-Byte-swap-partition_entries_lba-in-test.patch
deleted file mode 100644
index e26718e..0000000
--- a/0001-partition-Byte-swap-partition_entries_lba-in-test.patch
+++ /dev/null
@@ -1,37 +0,0 @@
-From 47aebc247e6553ffb593512b65296b4e2a8eac0a Mon Sep 17 00:00:00 2001
-From: "Richard W.M. Jones" <rjones@redhat.com>
-Date: Wed, 30 Aug 2023 15:53:16 +0000
-Subject: [PATCH] partition: Byte-swap partition_entries_lba in test
-
-Fixes: commit 7b9301a4c569456a4f96784229a2cd48e8957662
-Fixes: https://gitlab.com/nbdkit/nbdkit/-/merge_requests/38#note_1535695896
----
- filters/partition/partition-gpt.c | 12 ++++++------
- 1 file changed, 6 insertions(+), 6 deletions(-)
-
-diff --git a/filters/partition/partition-gpt.c b/filters/partition/partition-gpt.c
-index ea02e504c..80acddb44 100644
---- a/filters/partition/partition-gpt.c
-+++ b/filters/partition/partition-gpt.c
-@@ -59,12 +59,12 @@ get_gpt_header (uint8_t *sector,
-    * the header, rather than looking in the header to see what LBA
-    * they actually start at.  Let's at least check for that now.
-    */
--   if (header->partition_entries_lba != 2) {
--     nbdkit_error ("non-standard GPT layout: "
--                   "partition entries are not adjacent to header");
--     return -1;
--   }
--   return 0;
-+  if (le64toh (header->partition_entries_lba) != 2) {
-+    nbdkit_error ("non-standard GPT layout: "
-+                  "partition entries are not adjacent to header");
-+    return -1;
-+  }
-+  return 0;
- }
- 
- static void
--- 
-2.41.0
-
diff --git a/nbdkit.spec b/nbdkit.spec
index d3efc68..bfe33c8 100644
--- a/nbdkit.spec
+++ b/nbdkit.spec
@@ -59,8 +59,8 @@ ExclusiveArch:  x86_64
 %global source_directory 1.35-development
 
 Name:           nbdkit
-Version:        1.35.11
-Release:        2%{?dist}
+Version:        1.35.12
+Release:        1%{?dist}
 Summary:        NBD server
 
 License:        BSD-3-Clause
@@ -86,9 +86,6 @@ Source3:        copy-patches.sh
 Source4:        nbdkit.attr
 Source5:        nbdkit-find-provides
 
-# Upstream patch to fix partition filter on s390x
-Patch1:         0001-partition-Byte-swap-partition_entries_lba-in-test.patch
-
 BuildRequires: make
 %if 0%{patches_touch_autotools}
 BuildRequires:  autoconf, automake, libtool
@@ -1253,6 +1250,9 @@ export LIBGUESTFS_TRACE=1
 
 
 %changelog
+* Fri Sep 08 2023 Richard W.M. Jones <rjones@redhat.com> - 1.35.12-1
+- New upstream development version 1.35.12
+
 * Wed Aug 30 2023 Richard W.M. Jones <rjones@redhat.com> - 1.35.11-2
 - New upstream development version 1.35.11
 
diff --git a/sources b/sources
index 99604f0..07bfabb 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (nbdkit-1.35.11.tar.gz) = ab1db494592aa62fe3f9362e3fcfde74a246aa4e120bbebefb9ade6a5d81ae31080d8e3db09971b06f2a34400f1419f42750d5beddbba3b1802f124ab9a083da
-SHA512 (nbdkit-1.35.11.tar.gz.sig) = 7e6af76a90faa59e11101b4f567c2f943bf7c9e6241d29023142846fe65b76eb5ef555907bab591816bceaea0c0798c8d570b26b953f728c38f3eca7682a339e
+SHA512 (nbdkit-1.35.12.tar.gz) = 2c0beb53952d1c569c48be6fdb8457410821498fdf9fc33038b6b3ce90fd81015d7b1639bcc474aadaaec7520099dd2812b03f152112a3fd57ac77bf212311bf
+SHA512 (nbdkit-1.35.12.tar.gz.sig) = 2aa61b49200ecbb531d2004574378bb4bd663ac002c166750d554d7c3ac0c3fea29b657e78470cd6be34e07470168a369c199d701be7ab64fbb3c23be3088f17