diff --git a/eventuate-common-jdbc/src/main/java/io/eventuate/common/jdbc/OutboxPartitioningSpec.java b/eventuate-common-jdbc/src/main/java/io/eventuate/common/jdbc/OutboxPartitioningSpec.java
index 96eaed92..a5479099 100644
--- a/eventuate-common-jdbc/src/main/java/io/eventuate/common/jdbc/OutboxPartitioningSpec.java
+++ b/eventuate-common-jdbc/src/main/java/io/eventuate/common/jdbc/OutboxPartitioningSpec.java
@@ -39,4 +39,12 @@ public List<String> outboxTableSuffixes() {
         else
             return IntStream.range(0, outboxTables).mapToObj(Integer::toString).collect(Collectors.toList());
     }
+
+    public OutboxPartitioningSpec withOutboxTables(int outboxTables) {
+        return new OutboxPartitioningSpec(outboxTables, this.outboxTablePartitions);
+    }
+
+    public OutboxPartitioningSpec withTablePartitions(int outboxTables) {
+        return new OutboxPartitioningSpec(this.outboxTables, outboxTablePartitions);
+    }
 }