diff --git a/src/ResultSet.php b/src/ResultSet.php
index b7f1935..2669279 100644
--- a/src/ResultSet.php
+++ b/src/ResultSet.php
@@ -3,7 +3,6 @@
 namespace Amp\Sql;
 
 use Amp\Iterator;
-use Amp\Promise;
 
 interface ResultSet extends Iterator
 {