diff --git a/libnbd.spec b/libnbd.spec
index 04dcd4e..3fe8fa6 100644
--- a/libnbd.spec
+++ b/libnbd.spec
@@ -5,11 +5,11 @@
 %global patches_touch_autotools %{nil}
 
 # The source directory.
-%global source_directory 1.8-stable
+%global source_directory 1.9-develoment
 
 Name:           libnbd
-Version:        1.8.0
-Release:        2%{?dist}
+Version:        1.9.1
+Release:        1%{?dist}
 Summary:        NBD client library in userspace
 
 License:        LGPLv2+
@@ -317,6 +317,9 @@ make %{?_smp_mflags} check || {
 
 
 %changelog
+* Fri Jun 11 2021 Richard W.M. Jones <rjones@redhat.com> - 1.9.1-1
+- New upstream development version 1.9.1.
+
 * Mon Jun 07 2021 Python Maint <python-maint@redhat.com> - 1.8.0-2
 - Rebuilt for Python 3.10
 
diff --git a/sources b/sources
index cac10a6..f71ae2e 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (libnbd-1.8.0.tar.gz) = 20e3160ccdca3cf05e44da5540e55f39116275d92d16475404b7625e330c18d39949e7957529bcf2be72026256b2b343ca3c3687ffe58288a83e3ccfb05b7398
-SHA512 (libnbd-1.8.0.tar.gz.sig) = 3fef464f326430bb79c09582cc87d0734d0522a13d42354f563e0d26bedb45018636eaeb5f2456f726e41899c6dd65dbde327cfbd85c449a0596e2e6230e58f4
+SHA512 (libnbd-1.9.1.tar.gz) = b687fb003553943596cfed2a89d61c6c8c13ce19a2991766f93cd8ce52c61b39813662fcb1b516e257741a5b5c9a960e7e37b5f5e94c675d3df1bc2918f76f3e
+SHA512 (libnbd-1.9.1.tar.gz.sig) = 1aad178ae03b354039526e18d6ad5913d85bb7a1535de0f0b005fd5a9fb1b23f7c21d50d25a220cb0bab4686bf973b26406182bb7f3304f57aa1c80ee8887b25