diff --git a/0001-ocaml-Fix-bug-in-asynch-copy-test.patch b/0001-ocaml-Fix-bug-in-asynch-copy-test.patch
deleted file mode 100644
index d59a39b..0000000
--- a/0001-ocaml-Fix-bug-in-asynch-copy-test.patch
+++ /dev/null
@@ -1,52 +0,0 @@
-From 0475bfe04a527051c0a37af59a733c4c8554e427 Mon Sep 17 00:00:00 2001
-From: "Richard W.M. Jones" <rjones@redhat.com>
-Date: Fri, 17 Apr 2020 22:23:56 +0100
-Subject: [PATCH] ocaml: Fix bug in asynch copy test.
-
-This program had a subtle bug: If we've read everything from the
-source, but there are still source commands in flight, AND it happens
-that there are no destination commands in flight, then the loop
-finishes prematurely.  This is particularly evident when you run the
-test on a slow machine (armv7 in Koji is illustrative).  The fix is to
-check that there are no commands in flight either from the source or
-to the destination.
-
-(I actually discovered this when writing the golang bindings which
-copied from the OCaml version, but forgot to make the correction to
-the original.)
----
- ocaml/examples/asynch_copy.ml    | 3 ++-
- ocaml/tests/test_590_aio_copy.ml | 3 ++-
- 2 files changed, 4 insertions(+), 2 deletions(-)
-
-diff --git a/ocaml/examples/asynch_copy.ml b/ocaml/examples/asynch_copy.ml
-index d5dcc60..7132f57 100644
---- a/ocaml/examples/asynch_copy.ml
-+++ b/ocaml/examples/asynch_copy.ml
-@@ -41,7 +41,8 @@ let asynch_copy src dst =
-   (* The main loop which runs until we have finished reading and
-    * there are no more commands in flight.
-    *)
--  while !soff < size || NBD.aio_in_flight dst > 0 do
-+  while !soff < size || NBD.aio_in_flight src > 0 || NBD.aio_in_flight dst > 0
-+  do
-     (* If we're able to submit more reads from the source then do so now. *)
-     if !soff < size && NBD.aio_in_flight src < max_reads_in_flight then (
-       let bs = min bs (size -^ !soff) in
-diff --git a/ocaml/tests/test_590_aio_copy.ml b/ocaml/tests/test_590_aio_copy.ml
-index ac490ef..e3cd59d 100644
---- a/ocaml/tests/test_590_aio_copy.ml
-+++ b/ocaml/tests/test_590_aio_copy.ml
-@@ -64,7 +64,8 @@ let asynch_copy src dst =
-   (* The main loop which runs until we have finished reading and
-    * there are no more commands in flight.
-    *)
--  while !soff < size || NBD.aio_in_flight dst > 0 do
-+  while !soff < size || NBD.aio_in_flight src > 0 || NBD.aio_in_flight dst > 0
-+  do
-     (* If we're able to submit more reads from the source then do so now. *)
-     if !soff < size && NBD.aio_in_flight src < max_reads_in_flight then (
-       let bs = min bs (size -^ !soff) in
--- 
-2.25.0
-
diff --git a/libnbd.spec b/libnbd.spec
index 43cdbe9..0cc336f 100644
--- a/libnbd.spec
+++ b/libnbd.spec
@@ -8,8 +8,8 @@
 %global source_directory 1.3-development
 
 Name:           libnbd
-Version:        1.3.6
-Release:        5%{?dist}
+Version:        1.3.7
+Release:        1%{?dist}
 Summary:        NBD client library in userspace
 
 License:        LGPLv2+
@@ -22,9 +22,6 @@ Source1:        http://libguestfs.org/download/libnbd/%{source_directory}/%{name
 # https://pgp.key-server.io/pks/lookup?search=rjones%40redhat.com&fingerprint=on&op=vindex
 Source2:       libguestfs.keyring
 
-# Upstream patch to fix one of the tests that fails on slow machines.
-Patch1:        0001-ocaml-Fix-bug-in-asynch-copy-test.patch
-
 %if 0%{patches_touch_autotools}
 BuildRequires: autoconf, automake, libtool
 %endif
@@ -282,6 +279,9 @@ make %{?_smp_mflags} check || {
 
 
 %changelog
+* Thu Apr 23 2020 Richard W.M. Jones <rjones@redhat.com> - 1.3.7-1
+- New upstream version 1.3.7.
+
 * Tue Apr 21 2020 Richard W.M. Jones <rjones@redhat.com> - 1.3.6-5
 - OCaml 4.11.0 pre-release attempt 2
 
diff --git a/sources b/sources
index 4c27f4f..add6f4a 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (libnbd-1.3.6.tar.gz) = 2c39b820c95cdc61aceea188d1804f4551a776487543a487bd17357b039036ca15805daf8953e9701d003b2166de305167d7fa578fd3b0fa5e6764caebe9a516
-SHA512 (libnbd-1.3.6.tar.gz.sig) = 6d8eaab14e5853c6c2ffdfbef86ca1362246bc156ac035a12777c59afc827483a65957a0c4fa82b6bc5cc2653fb2a01fe6e21497db46800d935a181cb257044b
+SHA512 (libnbd-1.3.7.tar.gz) = 28980a8b4200ec41a6e344ca34e3fcfb27fb7a896b93e0883709da1804b310b1dbc76e9313524934909fd1ce55f019d2fa72d7058ea8db00f44795fdaa8e33b2
+SHA512 (libnbd-1.3.7.tar.gz.sig) = fc7a13d957dbc2595301d14f45674ae700f98d50ef57577cd5ce2ce4a33df043423f9ee41e44c06637d29a0728a0a526887a33b3d3dfe8cd175a535e00836a11