diff --git a/libnbd.spec b/libnbd.spec
index ec091d8..70596b9 100644
--- a/libnbd.spec
+++ b/libnbd.spec
@@ -11,7 +11,7 @@
 %global source_directory 1.15-development
 
 Name:           libnbd
-Version:        1.15.3
+Version:        1.15.4
 Release:        1%{?dist}
 Summary:        NBD client library in userspace
 
@@ -48,7 +48,7 @@ BuildRequires:  fuse3, fuse3-devel
 
 # For nbdublk
 BuildRequires:  liburing-devel >= 2.2
-BuildRequires:  ubdsrv-devel >= 0.1-3
+BuildRequires:  ubdsrv-devel >= 1.0-1
 
 # For the Python 3 bindings.
 BuildRequires:  python3-devel
@@ -346,6 +346,9 @@ make %{?_smp_mflags} check || {
 
 
 %changelog
+* Tue Sep 27 2022 Richard W.M. Jones <rjones@redhat.com> - 1.15.4-1
+- New upstream development version 1.15.4
+
 * Fri Sep 02 2022 Richard W.M. Jones <rjones@redhat.com> - 1.15.3-1
 - New upstream development version 1.15.3
 - New tool: nbdublk
diff --git a/sources b/sources
index 6978ec5..d6cd129 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (libnbd-1.15.3.tar.gz) = cffe5a3e135b2708d08e4ebc561f7ffb3c41e31f500068ab184952762e38f12a9bddadfc8055d22db94ef2ea8fde49f5cf2aae85efb155180824d824b09e35b1
-SHA512 (libnbd-1.15.3.tar.gz.sig) = dd6d25ef19c34597f2cd60003a72e0d3f056cdd07cf4285d688394c7e555dc94402153ba0eba7fdc90c781fa663d4df195f1283bba32775483e004d8194c2540
+SHA512 (libnbd-1.15.4.tar.gz) = 9132a844a5ccfae0eb7a599d34ace89aac4a5ba7d9097348dc4cc0be9ae412076d612375fe0318588358716506091c7c5ebebe1af1841d3a6dfb711feb7785b8
+SHA512 (libnbd-1.15.4.tar.gz.sig) = 9489065449ff29f8925f8bcfcf60acee3a6b1d93b0658867ffb47a907ede9e3a0b6fca85ce779aa902f420fc05a7323589c57756fcd6f8525bed5be7ad1b1d20