diff --git a/README.md b/README.md
index 30dbdde..78c4efd 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,4 @@ gricalToMail
 ============
 
 Provide a output from grical (iCalendar) for email announcement
+Gricals repository is at https://github.com/wikical/grical