diff --git a/modules/link/README.md b/modules/link/README.md
index 24c52d0..21de8ef 100644
--- a/modules/link/README.md
+++ b/modules/link/README.md
@@ -21,3 +21,5 @@ page. If called without a link, the bot will attempt the same on the last link
 which was posted in the current channel.
 #### ~ud [headword]
 Returns the first [Urban Dictionary](http://www.urbandictionary.com) definition for the headword provided.
+#### ~xkcd <comic ID>
+Returns a link to the [xkcd](http://xkcd.com) comic specified, or the latest one if a comic is not given.