IRC.md

@@ -1,4 +1,4 @@
-Channel: [#dimsumlabs (Freenode)][1]
+[#dimsumlabs (Libera.Chat)][4]
 
 Hackme: https://github.com/dimsumlabs/dsl-wall
 
@@ -17,3 +17,4 @@ feklee created a backup of the SD card on 10 February 2021.
 [1]: irc://irc.freenode.net/#dimsumlabs
 [2]: ssh://pi@wall.lan
 [3]: https://github.com/dimsumlabs/dsl-wall
+[4]: irc://irc.libera.chat/#dimsumlabs