diff --git a/nbdkit.spec b/nbdkit.spec
index 9652e94..f9f7539 100644
--- a/nbdkit.spec
+++ b/nbdkit.spec
@@ -42,11 +42,11 @@ ExclusiveArch:  x86_64
 %global patches_touch_autotools 1
 
 # The source directory.
-%global source_directory 1.24-stable
+%global source_directory 1.25-development
 
 Name:           nbdkit
-Version:        1.24.0
-Release:        3%{?dist}
+Version:        1.25.1
+Release:        1%{?dist}
 Summary:        NBD server
 
 License:        BSD
@@ -1269,6 +1269,9 @@ export LIBGUESTFS_TRACE=1
 
 
 %changelog
+* Wed Jan 20 2021 Richard W.M. Jones <rjones@redhat.com> - 1.25.1-1
+- New upstream development version 1.25.1.
+
 * Tue Jan 19 2021 Richard W.M. Jones <rjones@redhat.com> - 1.24.0-3
 - Obsolete nbdkit-tar-plugin to provide smooth upgrades to F33+.
 
diff --git a/sources b/sources
index bffaaa7..0a830f0 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (nbdkit-1.24.0.tar.gz) = cef2976163856b0c46148f9953764ed9ddf59fd2644380375ab34b7a10e981c3bebf892b63771b20a4a34f6ffb59d80f46204a38aa9fd0cd9fef82ff098b35d8
-SHA512 (nbdkit-1.24.0.tar.gz.sig) = 71888a984f3dcb73b87903a9e56bf5a6c6f8114907cb092185e0e3d44ce0406ae62e9671de87fd000f72f73fe732f23c69cdbb2eafa496884846a39fc70f90fa
+SHA512 (nbdkit-1.25.1.tar.gz) = 72b18c3be56240aeda4087ce3ebf7addf7a37ca4a063f39775b93dd89b9aefd196423a5912f581cf9f5ea774fca6e2159b2490d638260c4781627f5128e98031
+SHA512 (nbdkit-1.25.1.tar.gz.sig) = ef24fe7a4cd353f2646829615a99532060429ffd93e41aba3b59a3d4d7a6335c6c47254fb4b43192cd974e72c4c2248b644c6c254ed1323787db3f781620e734