diff --git a/CHANGES.rst b/CHANGES.rst
index 3befc8d9..b1e491a1 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -6,7 +6,7 @@ Changelog
 
 Minor changes:
 
-- ...
+- Link to related package.
 
 Breaking changes:
 
diff --git a/README.rst b/README.rst
index 0ff9a6c8..57b92f51 100644
--- a/README.rst
+++ b/README.rst
@@ -179,6 +179,7 @@ Related projects
 * `recurring-ical-events <https://pypi.org/project/recurring-ical-events/>`_. Library to query an ``icalendar.Calendar`` object for events and other components happening at a certain date or within a certain time.
 * `x-wr-timezone <https://pypi.org/project/x-wr-timezone/>`_. Library and command line tool to make ``icalendar.Calendar`` objects and files from Google Calendar (using the non-standard ``X-WR-TIMEZONE`` property) compliant with the standard (:rfc:`5545`).
 * `ics-query <http://pypi.org/project/ics-query>`_. Command line tool to query iCalendar files for occurrences of events and other components.
+* `icalendar-compatibility <https://icalendar-compatibility.readthedocs.io/en/latest/>`_ - access to event data compatible with RFC5545 and different implementations
 
 Further Reading
 ===============