diff --git a/common/src/main/java/org/mvndaemon/mvnd/common/Message.java b/common/src/main/java/org/mvndaemon/mvnd/common/Message.java
index d6ebc268..6c7de2b7 100644
--- a/common/src/main/java/org/mvndaemon/mvnd/common/Message.java
+++ b/common/src/main/java/org/mvndaemon/mvnd/common/Message.java
@@ -31,6 +31,7 @@ import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
+import java.util.concurrent.atomic.AtomicLong;
 
 public abstract class Message {
     public static final int BUILD_REQUEST = 1;
@@ -125,10 +126,13 @@ public abstract class Message {
         throw new IllegalStateException("Unexpected message type: " + type);
     }
 
+    private static final AtomicLong sequence = new AtomicLong();
+
+    final long seq = sequence.incrementAndGet();
     final long timestamp = System.nanoTime();
 
     public static Comparator<Message> getMessageComparator() {
-        return Comparator.comparingInt(Message::getClassOrder).thenComparingLong(Message::timestamp);
+        return Comparator.comparingInt(Message::getClassOrder).thenComparingLong(Message::seq);
     }
 
     public static int getClassOrder(Message m) {
@@ -178,6 +182,10 @@ public abstract class Message {
         }
     }
 
+    public long seq() {
+        return seq;
+    }
+
     public long timestamp() {
         return timestamp;
     }