diff --git a/tests/Encoder/Base64ItemEncoderTest.php b/tests/Encoder/Base64ItemEncoderTest.php
index 477f0fb..d2d0b4c 100644
--- a/tests/Encoder/Base64ItemEncoderTest.php
+++ b/tests/Encoder/Base64ItemEncoderTest.php
@@ -38,7 +38,7 @@ public function testEncode(mixed $item)
         }
     }
 
-    private function encodeItems(): iterable
+    public function encodeItems(): iterable
     {
         yield [1];
         yield ['test'];