diff --git a/doc/source/cli/data/glance.csv b/doc/source/cli/data/glance.csv
index 7387ddc47b..0a550e6cd6 100644
--- a/doc/source/cli/data/glance.csv
+++ b/doc/source/cli/data/glance.csv
@@ -42,7 +42,7 @@ md-property-create,image metadef property create,Create a new metadata definitio
 md-property-delete,image metadef property delete,Delete a specific metadata definitions property inside a namespace.
 md-property-list,image metadef property list,List metadata definitions properties inside a specific namespace.
 md-property-show,image metadef property show,Describe a specific metadata definitions property inside a namespace.
-md-property-update,,Update metadata definitions property inside a namespace.
+md-property-update,image metadef property set,Update metadata definitions property inside a namespace.
 md-resource-type-associate,,Associate resource type with a metadata definitions namespace.
 md-resource-type-deassociate,,Deassociate resource type with a metadata definitions namespace.
 md-resource-type-list,,List available resource type names.
diff --git a/openstackclient/image/v2/metadef_properties.py b/openstackclient/image/v2/metadef_properties.py
index 007e018ae0..d2fa4abd4e 100644
--- a/openstackclient/image/v2/metadef_properties.py
+++ b/openstackclient/image/v2/metadef_properties.py
@@ -173,6 +173,68 @@ class ListMetadefProperties(command.Lister):
         )
 
 
+class SetMetadefProperty(command.Command):
+    _description = _("Update metadef namespace property")
+
+    def get_parser(self, prog_name):
+        parser = super().get_parser(prog_name)
+        parser.add_argument(
+            "--name",
+            help=_("Internal name of the property"),
+        )
+        parser.add_argument(
+            "--title",
+            help=_("Property name displayed to the user"),
+        )
+        parser.add_argument(
+            "--type",
+            help=_("Property type"),
+        )
+        parser.add_argument(
+            "--schema",
+            help=_("Valid JSON schema of the property"),
+        )
+        parser.add_argument(
+            "namespace_name",
+            help=_("Namespace of the namespace to which the property belongs"),
+        )
+        parser.add_argument(
+            "property_name",
+            help=_("Property to update"),
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        image_client = self.app.client_manager.image
+
+        # We need to pass the values for *all* attributes as kwargs to
+        # update_metadef_property(), otherwise the attributes that are not
+        # listed will be reset.
+        data = image_client.get_metadef_property(
+            parsed_args.property_name, parsed_args.namespace_name
+        )
+        kwargs = _format_property(data)
+        for key in ['name', 'title', 'type']:
+            argument = getattr(parsed_args, key, None)
+            if argument is not None:
+                kwargs[key] = argument
+
+        if parsed_args.schema:
+            try:
+                kwargs.update(json.loads(parsed_args.schema))
+            except json.JSONDecodeError as e:
+                raise exceptions.CommandError(
+                    _("Failed to load JSON schema: %(e)s")
+                    % {
+                        'e': e,
+                    }
+                )
+
+        image_client.update_metadef_property(
+            parsed_args.property_name, parsed_args.namespace_name, **kwargs
+        )
+
+
 class ShowMetadefProperty(command.ShowOne):
     _description = _("Describe a specific property from a namespace")
 
diff --git a/openstackclient/tests/unit/image/v2/test_metadef_properties.py b/openstackclient/tests/unit/image/v2/test_metadef_properties.py
index fa59c29cda..274ed66353 100644
--- a/openstackclient/tests/unit/image/v2/test_metadef_properties.py
+++ b/openstackclient/tests/unit/image/v2/test_metadef_properties.py
@@ -160,6 +160,40 @@ class TestMetadefPropertyList(image_fakes.TestImagev2):
         self.assertEqual(getattr(self.datalist[0], 'name'), next(data)[0])
 
 
+class TestMetadefPropertySet(image_fakes.TestImagev2):
+    _metadef_property = image_fakes.create_one_metadef_property()
+
+    def setUp(self):
+        super().setUp()
+
+        self.cmd = metadef_properties.SetMetadefProperty(self.app, None)
+        self.image_client.get_metadef_property.return_value = (
+            self._metadef_property
+        )
+
+    def test_metadef_property_set(self):
+        arglist = ['--title', 'new title', 'namespace', 'property']
+        verifylist = []
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+        result = self.cmd.take_action(parsed_args)
+        self.assertIsNone(result)
+
+    def test_metadef_property_set_invalid_schema(self):
+        arglist = [
+            '--title',
+            'new title',
+            '--schema',
+            '{invalid}',
+            'namespace',
+            'property',
+        ]
+        verifylist = []
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+        self.assertRaises(
+            exceptions.CommandError, self.cmd.take_action, parsed_args
+        )
+
+
 class TestMetadefPropertyShow(image_fakes.TestImagev2):
     _metadef_property = image_fakes.create_one_metadef_property()
 
diff --git a/releasenotes/notes/add-metadef-property-set-ab9cdcb73adf6397.yaml b/releasenotes/notes/add-metadef-property-set-ab9cdcb73adf6397.yaml
new file mode 100644
index 0000000000..cf07d527de
--- /dev/null
+++ b/releasenotes/notes/add-metadef-property-set-ab9cdcb73adf6397.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add ``image metadef property set`` command to update a
+    metadef property inside a specific namespace.
diff --git a/setup.cfg b/setup.cfg
index 339cce2dbc..42b1a68648 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -402,6 +402,7 @@ openstack.image.v2 =
     image_metadef_property_create = openstackclient.image.v2.metadef_properties:CreateMetadefProperty
     image_metadef_property_delete = openstackclient.image.v2.metadef_properties:DeleteMetadefProperty
     image_metadef_property_list = openstackclient.image.v2.metadef_properties:ListMetadefProperties
+    image_metadef_property_set = openstackclient.image.v2.metadef_properties:SetMetadefProperty
     image_metadef_property_show = openstackclient.image.v2.metadef_properties:ShowMetadefProperty
 
     image_metadef_resource_type_list = openstackclient.image.v2.metadef_resource_types:ListMetadefResourceTypes