diff --git a/openvswitch.changes b/openvswitch.changes
index 61b6d32..fb8d3dc 100644
--- a/openvswitch.changes
+++ b/openvswitch.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Jul 16 09:10:42 UTC 2019 -  <jcaamano@suse.com>
+
+- Add unbound as a build requirement to support asynchronous DNS
+  resolving for remotes.
+
 -------------------------------------------------------------------
 Thu Jun 20 12:00:42 UTC 2019 -  <jcaamano@suse.com>
 
diff --git a/openvswitch.spec b/openvswitch.spec
index e81ffcf..c549bc1 100644
--- a/openvswitch.spec
+++ b/openvswitch.spec
@@ -126,6 +126,7 @@ BuildRequires:  libnuma-devel
 BuildRequires:  libpcap-devel
 BuildRequires:  rdma-core-devel
 %endif
+BuildRequires:  unbound-devel
 
 %description
 Open vSwitch is a multilayer virtual network Ethernet switch. It is