diff --git a/node/monitor.go b/node/monitor.go
index e7262a0..e469724 100644
--- a/node/monitor.go
+++ b/node/monitor.go
@@ -160,7 +160,7 @@ func (monitor *Monitor) pollingMempool(ctx context.Context, filter string) {
 		filter = filterApplied
 	}
 
-	url := fmt.Sprintf("chains/main/mempool/monitor_operations?version=0&%s", filter)
+	url := fmt.Sprintf("chains/main/mempool/monitor_operations?version=1&%s", filter)
 
 	ticker := time.NewTicker(time.Second)
 	defer ticker.Stop()