diff --git a/go/host/l1/publisher.go b/go/host/l1/publisher.go
index 2d853f66d6..4c56d6761f 100644
--- a/go/host/l1/publisher.go
+++ b/go/host/l1/publisher.go
@@ -302,6 +302,10 @@ func (p *Publisher) PublishCrossChainBundle(bundle *common.ExtCrossChainBundle)
 		return fmt.Errorf("unable to init")
 	}
 
+	p.logger.Info("Host preparing to send cross chain bundle transaction")
+	p.sendingLock.Lock()
+	defer p.sendingLock.Unlock()
+
 	nonce, err := p.ethClient.EthClient().PendingNonceAt(context.Background(), p.hostWallet.Address())
 	if err != nil {
 		p.logger.Error("Unable to get nonce for management contract", log.ErrKey, err)