diff --git a/src/enums/MDNodaRepository.php b/src/enums/MDNodaRepository.php
index d0d0d49..1a0bae0 100644
--- a/src/enums/MDNodaRepository.php
+++ b/src/enums/MDNodaRepository.php
@@ -78,6 +78,7 @@ enum MDNodaRepository implements MDValueEnumInterface, JsonSerializable {
             'iconclass' => self::iconclass,
             'Iconclass' => self::iconclass,
             'http://iconclass.org' => self::iconclass,
+            'https://iconclass.org' => self::iconclass,
             'klbb'      => self::klbb,
             'kl-bb'      => self::klbb,
             'lcsh'      => self::lcsh,