doc: update IRC reference to Libera.Chat

diff --git a/README b/README
index b076d0c53ea3067e888a4bcf8a70ee5d344c73fe..817dff743df4ae7ae07f37eea955e0d0a8853f4b 100644 (file)
--- a/README
+++ b/README
@@ -83,7 +83,7 @@ Mailing list
 IRC
 ===
 
-You can find the developers in the #sigrok IRC channel on Freenode.
+You can find the developers in the #sigrok IRC channel on Libera.Chat.
 
 Website
 =======