diff --git a/src/attrdict.c b/src/attrdict.c
index 75fe8c1..fa762fb 100644
--- a/src/attrdict.c
+++ b/src/attrdict.c
@@ -395,6 +395,7 @@ const AttrVersion TY_(W3CAttrsFor_AUDIO)[] =
   INCLUDE_MICRODATA
   { TidyAttr_AUTOPLAY,              xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|HT50|XH50 },
   { TidyAttr_CONTROLS,              xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|HT50|XH50 },
+  { TidyAttr_CROSSORIGIN,           xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|HT50|XH50 },
   { TidyAttr_LOOP,                  xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|HT50|XH50 },
   { TidyAttr_MEDIAGROUP,            xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|HT50|XH50 },
   { TidyAttr_PRELOAD,               xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|xxxx|HT50|XH50 },