diff --git a/nbdkit.spec b/nbdkit.spec
index b999a4b..5f7e16d 100644
--- a/nbdkit.spec
+++ b/nbdkit.spec
@@ -28,10 +28,10 @@
 %global patches_touch_autotools %{nil}
 
 # The source directory.
-%global source_directory 1.8-stable
+%global source_directory 1.9-development
 
 Name:           nbdkit
-Version:        1.8.0
+Version:        1.9.0
 Release:        1%{?dist}
 Summary:        NBD server
 
@@ -940,6 +940,10 @@ popd
 
 
 %changelog
+* Wed Nov 14 2018 Richard W.M. Jones <rjones@redhat.com> - 1.9.0-1
+- New upstream version 1.9.0.
+- New development branch.
+
 * Mon Nov 12 2018 Richard W.M. Jones <rjones@redhat.com> - 1.8.0-1
 - New stable branch version 1.8.0.
 
diff --git a/sources b/sources
index 2b622d3..e8a563d 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (nbdkit-1.8.0.tar.gz) = 961af6dad446a2ad3ad1fbd0fae5644ef60e07024b0f79ffe9b29ed04c21d995d2cc515afe7a88954d7bbe0dcf9682306547454facf25dd32e8562e2090d66c9
-SHA512 (nbdkit-1.8.0.tar.gz.sig) = a360ea34609c747784ce79c717aaa2cc7006ea01b3acd23653b8f1d52c40b972e128c582c416b6c07ada0e99773ad3ddcc8b4bd927f7fb66bb036e39b52a1123
+SHA512 (nbdkit-1.9.0.tar.gz) = 4ccfc0532fe127d6258adc1bada6a23ec01a4ac2f7e90fce27e89d68ffa0adafad571616d3105d1a17756ba8cc13530433c48d55143522dcc322ec1bbabb5caa
+SHA512 (nbdkit-1.9.0.tar.gz.sig) = d5998becbee33f71fd023dc13ba18990951b41b9189fdc34ae736b1fd9db4b8658bed612df72f5610d064c9d4283c1f0525b87b211ad520ee499843e34036cad