diff --git a/Versioning.md b/Versioning.md
index 2306248..9ee65ce 100644
--- a/Versioning.md
+++ b/Versioning.md
@@ -1,6 +1,6 @@
 TODO: fill in this page with a description of each tahoe protocol version.
 
-<http://allmydata.org/pipermail/tahoe-dev/2008-November/000879.html> contains an overview of the versioning scheme.
+<http://tahoe-lafs.org/pipermail/tahoe-dev/2008-November/000879.html> contains an overview of the versioning scheme.
 
 ## Introducer
  * v1