diff --git a/lib/common/html_blocks.js b/lib/common/html_blocks.js
index daa6b46..7af48fb 100644
--- a/lib/common/html_blocks.js
+++ b/lib/common/html_blocks.js
@@ -1,5 +1,5 @@
-// List of valid html blocks names, accorting to commonmark spec
-// http://jgm.github.io/CommonMark/spec.html#html-blocks
+// List of valid html blocks names, according to commonmark spec
+// https://spec.commonmark.org/0.30/#html-blocks
 
 'use strict';