doc: update IRC reference to Libera.Chat

diff --git a/README b/README
index c11378075d9274a08a8b115dfe51f53681e4c13a..ac81b025a38dcd3a5336e0bbf9360e37fddfd64c 100644 (file)
--- a/README
+++ b/README
@@ -46,7 +46,7 @@ Mailing list
 IRC
 ---
 
-You can find the sigrok developers in the #sigrok IRC channel on Freenode.
+You can find the sigrok developers in the #sigrok IRC channel on Libera.Chat.
 
 
 Website