diff --git a/os_resource_classes/__init__.py b/os_resource_classes/__init__.py
index 07b3082..53ecc01 100644
--- a/os_resource_classes/__init__.py
+++ b/os_resource_classes/__init__.py
@@ -64,6 +64,10 @@ STANDARDS = [
     # guest. A dedicated CPU is a physical processor that has been marked
     # to be used for a single guest only
     'PCPU',
+    # Resource class representing the number of guests a compute node can
+    # host with memory encrypted at the hardware level.  See
+    # http://specs.openstack.org/openstack/nova-specs/specs/train/approved/amd-sev-libvirt-support.html
+    'MEM_ENCRYPTION_CONTEXT',
 ]
 
 # Namespace used for custom resource classes
diff --git a/os_resource_classes/tests/test_os_resource_classes.py b/os_resource_classes/tests/test_os_resource_classes.py
index dd3e4e5..2976ce7 100644
--- a/os_resource_classes/tests/test_os_resource_classes.py
+++ b/os_resource_classes/tests/test_os_resource_classes.py
@@ -44,8 +44,8 @@ class TestOs_resource_classes(base.TestCase):
         of the STANDARDS list, otherwise database ids will get confused
         in the placement service.
         """
-        expected_last_class = rc.PCPU
-        expected_length = 15
+        expected_last_class = rc.MEM_ENCRYPTION_CONTEXT
+        expected_length = 16
         self.assertEqual(expected_last_class, rc.STANDARDS[-1])
         self.assertEqual(expected_length, len(rc.STANDARDS))