diff --git a/gnu/packages/markup.scm b/gnu/packages/markup.scm
index 3cd7fb559c..7ae73da8a5 100644
--- a/gnu/packages/markup.scm
+++ b/gnu/packages/markup.scm
@@ -228,7 +228,7 @@ (define-public cmark
 as HTML, groff man, LaTeX, CommonMark, or an XML representation of the
 AST.  The package also provides the command-line program @command{cmark}
 for parsing and rendering CommonMark.")
-    (home-page "http://commonmark.org")
+    (home-page "https://commonmark.org")
     ;; cmark is distributed with a BSD-2 license, but some components are Expat
     ;; licensed. The CommonMark specification is Creative Commons CC-BY-SA 4.0
     ;; licensed. See 'COPYING' in the source distribution for more information.