diff --git a/openstack/network/v2/_proxy.py b/openstack/network/v2/_proxy.py
index d429a05d..b33cee8b 100644
--- a/openstack/network/v2/_proxy.py
+++ b/openstack/network/v2/_proxy.py
@@ -1192,22 +1192,6 @@ class Proxy(proxy.BaseProxy):
         return self._list(security_group_rule.SecurityGroupRule,
                           paginated=False, **query)
 
-    def update_security_group_rule(self, value, **attrs):
-        """Update a security group rule
-
-        :param value: Either the id of a security group rule or a
-                      :class:`~openstack.network.v2.security_group_rule.
-                      SecurityGroupRule` instance.
-        :attrs kwargs: The attributes to update on the security group rule
-                       represented by ``value``.
-
-        :returns: The updated security group rule
-        :rtype: :class:`~openstack.network.v2.security_group_rule.
-                        SecurityGroupRule`
-        """
-        return self._update(security_group_rule.SecurityGroupRule, value,
-                            **attrs)
-
     def create_subnet(self, **attrs):
         """Create a new subnet from attributes
 
diff --git a/openstack/network/v2/security_group_rule.py b/openstack/network/v2/security_group_rule.py
index 65f5cde5..c0ec7a9c 100644
--- a/openstack/network/v2/security_group_rule.py
+++ b/openstack/network/v2/security_group_rule.py
@@ -23,7 +23,7 @@ class SecurityGroupRule(resource.Resource):
     # capabilities
     allow_create = True
     allow_retrieve = True
-    allow_update = True
+    allow_update = False
     allow_delete = True
     allow_list = True
 
diff --git a/openstack/tests/unit/network/v2/test_proxy.py b/openstack/tests/unit/network/v2/test_proxy.py
index e28264de..254702e4 100644
--- a/openstack/tests/unit/network/v2/test_proxy.py
+++ b/openstack/tests/unit/network/v2/test_proxy.py
@@ -441,10 +441,6 @@ class TestNetworkProxy(test_proxy_base.TestProxyBase):
                          security_group_rule.SecurityGroupRule,
                          paginated=False)
 
-    def test_security_group_rule_update(self):
-        self.verify_update(self.proxy.update_security_group_rule,
-                           security_group_rule.SecurityGroupRule)
-
     def test_subnet_create_attrs(self):
         self.verify_create(self.proxy.create_subnet, subnet.Subnet)
 
diff --git a/openstack/tests/unit/network/v2/test_security_group_rule.py b/openstack/tests/unit/network/v2/test_security_group_rule.py
index 056e44ee..aa64ef3e 100644
--- a/openstack/tests/unit/network/v2/test_security_group_rule.py
+++ b/openstack/tests/unit/network/v2/test_security_group_rule.py
@@ -39,7 +39,7 @@ class TestSecurityGroupRule(testtools.TestCase):
         self.assertEqual('network', sot.service.service_type)
         self.assertTrue(sot.allow_create)
         self.assertTrue(sot.allow_retrieve)
-        self.assertTrue(sot.allow_update)
+        self.assertFalse(sot.allow_update)
         self.assertTrue(sot.allow_delete)
         self.assertTrue(sot.allow_list)