diff --git a/README.md b/README.md
index 186191c..3f52135 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,7 @@ fn setup_clients(mut commands: Commands) {
         cap: 10,
     });
 
+    // spawn websocket client
     let mut mqtt_options = MqttOptions::new("mqtt-ws-client", "ws://127.0.0.1:8080", 8080);
     mqtt_options.set_transport(Transport::Ws);
     // mqtt_options.set_credentials("username", "password");
@@ -56,6 +57,7 @@ fn setup_clients(mut commands: Commands) {
     ));
 }
 
+// just a marker component for filter
 #[derive(Component)]
 struct WebsocketMqttClient;
 
@@ -140,10 +142,10 @@ fn publish_message(mqtt_client: Query<&MqttClient, With<MqttClientConnected>>) {
 
 ## Supported Versions
 
-| bevy | bevy_mqtt |
-|------|-----------|
-| 0.14 | 0.2, 0.3  |
-| 0.13 | 0.1       |
+| bevy | bevy_mqtt     |
+|------|---------------|
+| 0.14 | 0.2, 0.3, 0.4 |
+| 0.13 | 0.1           |
 
 ## License
 
diff --git a/examples/pub_and_sub.rs b/examples/pub_and_sub.rs
index fde1929..561c23c 100644
--- a/examples/pub_and_sub.rs
+++ b/examples/pub_and_sub.rs
@@ -25,6 +25,7 @@ fn setup_clients(mut commands: Commands) {
         cap: 10,
     });
 
+    // spawn websocket client
     let mut mqtt_options = MqttOptions::new("mqtt-ws-client", "ws://127.0.0.1:8080", 8080);
     mqtt_options.set_transport(Transport::Ws);
     // mqtt_options.set_credentials("username", "password");
@@ -39,6 +40,7 @@ fn setup_clients(mut commands: Commands) {
     ));
 }
 
+// just a marker component for filter
 #[derive(Component)]
 struct WebsocketMqttClient;