diff --git a/stubs/pdo.php b/stubs/pdo.php
index 695b1f438..248dc9ae8 100644
--- a/stubs/pdo.php
+++ b/stubs/pdo.php
@@ -1,6 +1,6 @@
 <?php
 
-class PdoStatement {
+class PdoStatement implements Traversable {
     /**
      * @psalm-taint-sink callable $class
      *