diff --git a/src/main/java/org/qortal/transaction/Transaction.java b/src/main/java/org/qortal/transaction/Transaction.java
index cc986f41..f026d0ae 100644
--- a/src/main/java/org/qortal/transaction/Transaction.java
+++ b/src/main/java/org/qortal/transaction/Transaction.java
@@ -380,7 +380,7 @@ public abstract class Transaction {
 	 * @return transaction version number
 	 */
 	public static int getVersionByTimestamp(long timestamp) {
-		return 4;
+		return 5; // TODO: hard fork timestamp!!
 	}
 
 	/**