diff --git a/TestGrid.md b/TestGrid.md
index dd3fa05..fc1abb9 100644
--- a/TestGrid.md
+++ b/TestGrid.md
@@ -68,4 +68,4 @@ The canonical way to access Tahoe-LAFS grids is to run your own client node.  Ha
 
 ## Contact Info
 
-If the pubgrid introducer appears to be down, either send an email to the tahoe-dev mailing list or contact PRab on irc://freenode/tahoe-lafs
+If the pubgrid introducer appears to be down, either send an email to the tahoe-dev mailing list or contact PRab on irc://irc.libera.chat/tahoe-lafs