diff --git a/src/Node/Printer/Printer.php b/src/Node/Printer/Printer.php
index 78455184f0..131376d66d 100644
--- a/src/Node/Printer/Printer.php
+++ b/src/Node/Printer/Printer.php
@@ -19,6 +19,9 @@
 use PHPStan\Type\VerbosityLevel;
 use function sprintf;
 
+/**
+ * @api
+ */
 final class Printer extends Standard
 {