diff --git a/etc/metadefs/compute-hypervisor.json b/etc/metadefs/compute-hypervisor.json
index 29169dc961..ea73ab15f7 100644
--- a/etc/metadefs/compute-hypervisor.json
+++ b/etc/metadefs/compute-hypervisor.json
@@ -12,13 +12,14 @@
     "properties": {
         "hypervisor_type": {
             "title": "Hypervisor Type",
-            "description": "Hypervisor type required by the image. Used with the ImagePropertiesFilter. \n\n KVM - Kernel-based Virtual Machine. LXC - Linux Containers (through libvirt). QEMU - Quick EMUlator. UML - User Mode Linux. hyperv - Microsoft® hyperv. vmware - VMware® vsphere. Baremetal - physical provisioning. VZ - Virtuozzo OS Containers and Virtual Machines (through libvirt). For more information, see: http://docs.openstack.org/trunk/config-reference/content/section_compute-hypervisors.html",
+            "description": "Hypervisor type required by the image. Used with the ImagePropertiesFilter. \n\n Baremetal - physical provisioning. hyperv - Microsoft® hyperv. KVM - Kernel-based Virtual Machine. LXC - Linux Containers (through libvirt). powervm - IBM® PowerVM®. QEMU - Quick EMUlator. UML - User Mode Linux. vmware - VMware® vsphere. VZ - Virtuozzo OS Containers and Virtual Machines (through libvirt). For more information, see: https://docs.openstack.org/nova/latest/admin/configuration/hypervisors.html",
             "type": "string",
             "enum": [
                 "baremetal",
                 "hyperv",
                 "kvm",
                 "lxc",
+                "powervm",
                 "qemu",
                 "uml",
                 "vmware",
diff --git a/releasenotes/notes/train-metadefs-changes-c4380754cdd13a19.yaml b/releasenotes/notes/train-metadefs-changes-c4380754cdd13a19.yaml
new file mode 100644
index 0000000000..4359fa83f7
--- /dev/null
+++ b/releasenotes/notes/train-metadefs-changes-c4380754cdd13a19.yaml
@@ -0,0 +1,12 @@
+---
+upgrade:
+  - |
+    The following metadata definitions have been modified in the Train
+    release:
+
+    * Added ``powervm`` to the ``hypervisor_type`` enumeration in the
+      ``OS:::Compute::Hypervisor`` namespace.
+
+    You may upgrade these definitions using:
+
+    ``glance-manage db load_metadefs [--path <path>] [--merge] [--prefer_new]``