diff --git a/lib/uh/wm/manager.rb b/lib/uh/wm/manager.rb
index 393f7f8..a3fc312 100644
--- a/lib/uh/wm/manager.rb
+++ b/lib/uh/wm/manager.rb
@@ -124,6 +124,10 @@ module Uh
         map event.window
       end
 
+      def handle_property_notify event
+        update_properties event.window
+      end
+
       def handle_unmap_notify event
         unmap event.window
       end
diff --git a/spec/uh/wm/manager_spec.rb b/spec/uh/wm/manager_spec.rb
index d664d8a..036c4f6 100644
--- a/spec/uh/wm/manager_spec.rb
+++ b/spec/uh/wm/manager_spec.rb
@@ -371,6 +371,15 @@ module Uh
             manager.handle event
           end
         end
+
+        context 'when property_notify event is given' do
+          let(:event) { mock_event :property_notify, window: :window }
+
+          it 'updates event window properties' do
+            expect(manager).to receive(:update_properties).with :window
+            manager.handle event
+          end
+        end
       end
     end
   end