diff --git a/etc/ORG-NEWS b/etc/ORG-NEWS
index 16f8a1c30..e37bba2bd 100644
--- a/etc/ORG-NEWS
+++ b/etc/ORG-NEWS
@@ -308,6 +308,12 @@ The change is breaking when ~org-use-property-inheritance~ is set to ~t~.
 
 The =TEST= parameter is better served by Emacs debugging tools.
 ** New and changed options
+*** ~org-info-other-documents~ is now a custom option
+
+Users can now extend the value of ~org-info-other-documents~ to
+specify Urls to third-party (non-Emacs) online info nodes when
+exporting =info:= links.
+
 *** ~org-export-smart-quotes-alist~ is now a custom option
 
 Previously, smart quotes rules for different languages where
diff --git a/lisp/ol-info.el b/lisp/ol-info.el
index 350ccf5cc..135051631 100644
--- a/lisp/ol-info.el
+++ b/lisp/ol-info.el
@@ -139,13 +139,17 @@ If LINK is not an info link then DESC is returned."
   "List of Emacs documents available.
 Taken from <https://www.gnu.org/software/emacs/manual/html_mono/.>")
 
-(defconst org-info-other-documents
+(defcustom org-info-other-documents
   '(("dir" . "https://www.gnu.org/manual/manual.html") ; index
     ("libc" . "https://www.gnu.org/software/libc/manual/html_mono/libc.html")
     ("make" . "https://www.gnu.org/software/make/manual/make.html"))
   "Alist of documents generated from Texinfo source.
 When converting info links to HTML, links to any one of these manuals are
-converted to use these URL.")
+converted to use these URL."
+  :group 'org-link
+  :type '(alist :key-type string :value-type string)
+  :package-version '(Org . "9.7")
+  :safe t)
 
 (defun org-info-map-html-url (filename)
   "Return URL or HTML file associated to Info FILENAME.