diff --git a/lib/ansible_tower_client/base_model.rb b/lib/ansible_tower_client/base_model.rb
index 121b894..a7f83ee 100644
--- a/lib/ansible_tower_client/base_model.rb
+++ b/lib/ansible_tower_client/base_model.rb
@@ -10,6 +10,18 @@ def self.endpoint
       base_class.to_s.split(/::/)[1].tableize.to_s.freeze
     end
 
+    def method_missing(m, *args, &_block)
+      if self.class.send(:id_attrs).include?(m.to_s)
+        super
+      else
+        self.class.send(:convert_value, m, args, self)
+      end
+    end
+
+    def respond_to_missing?(method, *)
+      !self.class.send(:id_attrs).include?(method.to_s)
+    end
+
     # Constructs and returns a new JSON wrapper class. Pass in a plain
     # JSON string and it will automatically give you accessor methods
     # that make it behave like a typical Ruby object. You may also pass
@@ -83,11 +95,7 @@ def update_attributes!(attributes)
       @api.patch(url, attributes.to_json)
       attributes.each do |method_name, value|
         invoke_name = "#{override_raw_attributes[method_name] || method_name}="
-        if respond_to?(invoke_name)
-          send(invoke_name, value)
-        else
-          AnsibleTowerClient.logger.warn("Unknown attribute/method: #{invoke_name}. Skip updating it ...")
-        end
+        send(invoke_name, value)
       end
       true
     end
diff --git a/spec/base_model_spec.rb b/spec/base_model_spec.rb
index b55849e..6179883 100644
--- a/spec/base_model_spec.rb
+++ b/spec/base_model_spec.rb
@@ -34,8 +34,9 @@
       hash_with_relations = hash.merge("host" => 1, "related" => {"host" => "http://example.com/hosts/1"})
       instance            = described_class.new(api, hash_with_relations)
 
-      expect(instance).to_not     respond_to(:host)
+      expect(instance).to_not respond_to(:host)
       expect(instance.host_id).to eq(1)
+      expect(instance).to respond_to(:anything)
     end
   end
 
diff --git a/spec/support/shared_examples/crud_methods.rb b/spec/support/shared_examples/crud_methods.rb
index 267bcba..f65da30 100644
--- a/spec/support/shared_examples/crud_methods.rb
+++ b/spec/support/shared_examples/crud_methods.rb
@@ -37,12 +37,6 @@
         expect(obj.name).to eq 'blah'
       end
 
-      it "ignore unknown attributes if patch succeeds" do
-        expect(instance_api).to receive(:patch).and_return(instance_double("Faraday::Result", :body => raw_instance.to_json))
-        expect(obj.update_attributes!(:name => 'blah', :stranger_thing => 'bomb')).to eq true
-        expect(obj.name).to eq 'blah'
-      end
-
       it "returns an error if an error is raised" do
         expect(instance_api).to receive(:patch).and_raise(AnsibleTowerClient::Error, 'error')
         expect { obj.update_attributes!(:name => 'bad name') }.to raise_error(AnsibleTowerClient::Error)