diff --git a/src/main/java/de/svenkubiak/jpushover/exceptions/JPushoverException.java b/src/main/java/de/svenkubiak/jpushover/exceptions/JPushoverException.java
index 0c5c0cc..1237d7d 100644
--- a/src/main/java/de/svenkubiak/jpushover/exceptions/JPushoverException.java
+++ b/src/main/java/de/svenkubiak/jpushover/exceptions/JPushoverException.java
@@ -6,8 +6,8 @@ package de.svenkubiak.jpushover.exceptions;
  *
  */
 public class JPushoverException extends Exception{
-    private static final long serialVersionUID = -5719174030861964503L;
-    
+    private static final long serialVersionUID = 7468682477047138171L;
+
     public JPushoverException(String message, Exception e) {
         super(message, e);
     }
diff --git a/src/main/java/de/svenkubiak/jpushover/listener/WebSocketListener.java b/src/main/java/de/svenkubiak/jpushover/listener/WebSocketListener.java
index 48ba31b..f600a25 100644
--- a/src/main/java/de/svenkubiak/jpushover/listener/WebSocketListener.java
+++ b/src/main/java/de/svenkubiak/jpushover/listener/WebSocketListener.java
@@ -29,7 +29,7 @@ public class WebSocketListener implements Listener {
     @Override
     public CompletionStage<?> onBinary(WebSocket webSocket, ByteBuffer data, boolean last) {
         if (data != null) {
-            String frame = StandardCharsets.UTF_8.decode(data).toString();
+            var frame = StandardCharsets.UTF_8.decode(data).toString();
             switch (frame) {
                 case "!":
                     messageListener.onMessage();