diff --git a/defaults/main.yml b/defaults/main.yml
index bbd04a0..0abc1d7 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,6 +1,6 @@
 ---
 #
-# There's an untrusted Ubuntu PPA repository with gobs of packages and dependencies: https://launchpad.net/~marutter/+archive/ubuntu/c2d4u
+# https://cran.r-project.org/bin/linux/ubuntu/
 #
 # To list the installed R packages
 # Run R, then execute