diff --git a/server.go b/server.go
index c74d127..7457cb0 100644
--- a/server.go
+++ b/server.go
@@ -199,6 +199,9 @@ func handleBlock(request []byte, bc *Blockchain) {
 
 		blocksInTransit = blocksInTransit[1:]
 	}
+
+	UTXOSet := UTXOSet{bc}
+	UTXOSet.Update(block)
 }
 
 func handleInv(request []byte, bc *Blockchain) {