diff --git a/manifests/plugins/plumgrid.pp b/manifests/plugins/plumgrid.pp
index 26997715b..49e78fdd9 100644
--- a/manifests/plugins/plumgrid.pp
+++ b/manifests/plugins/plumgrid.pp
@@ -124,6 +124,9 @@ class neutron::plugins::plumgrid (
   include neutron::deps
   include neutron::params
 
+  warning('support for plumgrid plugin has been deprecated and will be removed \
+in a future release.')
+
   ensure_resource('file', '/etc/neutron/plugins/plumgrid', {
     ensure => directory,
     owner  => 'root',
diff --git a/releasenotes/notes/deprecate-plumgrid-plugin-support-d9e0cbcf3c26b8f9.yaml b/releasenotes/notes/deprecate-plumgrid-plugin-support-d9e0cbcf3c26b8f9.yaml
new file mode 100644
index 000000000..d51930850
--- /dev/null
+++ b/releasenotes/notes/deprecate-plumgrid-plugin-support-d9e0cbcf3c26b8f9.yaml
@@ -0,0 +1,5 @@
+---
+deprecations:
+  - |
+    Support for plumgrid plugin has been deprecated and will be removed in a
+    future release.