diff --git a/openstack/compute/v2/_proxy.py b/openstack/compute/v2/_proxy.py
index f96459d56..35f819d5f 100644
--- a/openstack/compute/v2/_proxy.py
+++ b/openstack/compute/v2/_proxy.py
@@ -76,8 +76,18 @@ class Proxy(proxy.BaseProxy):
         flv = flavor.FlavorDetail if details else flavor.Flavor
         return flv.list(self.session, **params)
 
-    def update_flavor(self, **data):
-        return flavor.Flavor(data).update(self.session)
+    def update_flavor(self, value, **attrs):
+        """Update a flavor
+
+        :param value: Either the id of a flavor or a
+                      :class:`~openstack.compute.v2.flavor.Flavor` instance.
+        :attrs kwargs: The attributes to update on the flavor represented
+                       by ``value``.
+
+        :returns: The updated flavor
+        :rtype: :class:`~openstack.compute.v2.flavor.Flavor`
+        """
+        return self._update(flavor.Flavor, value, **attrs)
 
     def delete_image(self, value, ignore_missing=True):
         """Delete an image
@@ -149,8 +159,18 @@ class Proxy(proxy.BaseProxy):
     def list_keypairs(self, **params):
         return keypair.Keypair.list(self.session, **params)
 
-    def update_keypair(self, **data):
-        return keypair.Keypair(data).update(self.session)
+    def update_keypair(self, value, **attrs):
+        """Update a keypair
+
+        :param value: Either the id of a keypair or a
+                      :class:`~openstack.compute.v2.keypair.Keypair` instance.
+        :attrs kwargs: The attributes to update on the keypair represented
+                       by ``value``.
+
+        :returns: The updated keypair
+        :rtype: :class:`~openstack.compute.v2.keypair.Keypair`
+        """
+        return self._update(keypair.Keypair, value, **attrs)
 
     def limits(self):
         """Retrieve limits that are applied to the project's account
@@ -254,8 +274,20 @@ class Proxy(proxy.BaseProxy):
     def list_server_interfaces(self):
         return server_interface.ServerInterface.list(self.session)
 
-    def update_server_interface(self, **data):
-        return server_interface.ServerInterface(data).update(self.session)
+    def update_server_interface(self, value, **attrs):
+        """Update a server interface
+
+        :param value: Either the id of a server interface or a
+                      :class:
+                      `~openstack.compute.v2.server_interface.ServerInterface`
+                      instance.
+        :attrs kwargs: The attributes to update on the server interface
+                       represented by ``value``.
+
+        :returns: The updated server interface
+        :rtype: :class:`~openstack.compute.v2.server_interface.ServerInterface`
+        """
+        return self._update(server_interface.ServerInterface, value, **attrs)
 
     def find_server_ip(self, name_or_id):
         return server_ip.ServerIP.find(self.session, name_or_id)
diff --git a/openstack/tests/unit/compute/v2/test_proxy.py b/openstack/tests/unit/compute/v2/test_proxy.py
index c1e80d6a3..4c419e650 100644
--- a/openstack/tests/unit/compute/v2/test_proxy.py
+++ b/openstack/tests/unit/compute/v2/test_proxy.py
@@ -65,8 +65,13 @@ class TestComputeProxy(test_proxy_base.TestProxyBase):
                          method_kwargs={"details": True})
 
     def test_flavor_update(self):
-        self.verify_update('openstack.compute.v2.flavor.Flavor.update',
-                           self.proxy.update_flavor)
+        kwargs = {"x": 1, "y": 2, "z": 3}
+        self.verify_update2('openstack.proxy.BaseProxy._update',
+                            self.proxy.update_flavor,
+                            method_args=["resource_or_id"],
+                            method_kwargs=kwargs,
+                            expected_args=[flavor.Flavor, "resource_or_id"],
+                            expected_kwargs=kwargs)
 
     def test_image_delete(self):
         self.verify_delete2(image.Image, self.proxy.delete_image, False)
@@ -121,8 +126,13 @@ class TestComputeProxy(test_proxy_base.TestProxyBase):
                          self.proxy.list_keypairs)
 
     def test_keypair_update(self):
-        self.verify_update('openstack.compute.v2.keypair.Keypair.update',
-                           self.proxy.update_keypair)
+        kwargs = {"x": 1, "y": 2, "z": 3}
+        self.verify_update2('openstack.proxy.BaseProxy._update',
+                            self.proxy.update_keypair,
+                            method_args=["resource_or_id"],
+                            method_kwargs=kwargs,
+                            expected_args=[keypair.Keypair, "resource_or_id"],
+                            expected_kwargs=kwargs)
 
     def test_limits(self):
         self.verify_get(
@@ -161,9 +171,14 @@ class TestComputeProxy(test_proxy_base.TestProxyBase):
             self.proxy.list_server_interfaces)
 
     def test_server_interface_update(self):
-        self.verify_update(
-            'openstack.compute.v2.server_interface.ServerInterface.update',
-            self.proxy.update_server_interface)
+        kwargs = {"x": 1, "y": 2, "z": 3}
+        self.verify_update2('openstack.proxy.BaseProxy._update',
+                            self.proxy.update_server_interface,
+                            method_args=["resource_or_id"],
+                            method_kwargs=kwargs,
+                            expected_args=[server_interface.ServerInterface,
+                                           "resource_or_id"],
+                            expected_kwargs=kwargs)
 
     def test_server_ip_find(self):
         self.verify_find('openstack.compute.v2.server_ip.ServerIP.find',