diff --git a/tests/src/Codec/GuidStringCodecTest.php b/tests/src/Codec/GuidStringCodecTest.php
index 6ea7869..6fbe9d5 100644
--- a/tests/src/Codec/GuidStringCodecTest.php
+++ b/tests/src/Codec/GuidStringCodecTest.php
@@ -2,8 +2,10 @@
 
 namespace Ramsey\Uuid\Test\Codec;
 
+use Ramsey\Uuid\Builder\UuidBuilderInterface;
 use Ramsey\Uuid\Codec\GuidStringCodec;
 use Ramsey\Uuid\Test\TestCase;
+use Ramsey\Uuid\UuidInterface;
 
 /**
  * Class GuidStringCodecTest