diff --git a/extra/calendar/authors.txt b/extra/calendar/authors.txt
index 7c1b2f2279..1901f27a24 100644
--- a/extra/calendar/authors.txt
+++ b/extra/calendar/authors.txt
@@ -1 +1 @@
-Doug Coleman
+Slava Pestov
diff --git a/extra/calendar/model/model.factor b/extra/calendar/model/model.factor
index d07f4b4559..855b0cd815 100755
--- a/extra/calendar/model/model.factor
+++ b/extra/calendar/model/model.factor
@@ -1,6 +1,6 @@
 ! Copyright (C) 2008 Slava Pestov
 ! See http://factorcode.org/license.txt for BSD license.
-USING: calendar namespaces models threads ;
+USING: calendar namespaces models threads init ;
 IN: calendar.model
 
 SYMBOL: time
@@ -12,4 +12,4 @@ SYMBOL: time
 : time-thread ( -- ) [ (time-thread) ] in-thread ;
 
 f <model> time set-global
-time-thread
+[ time-thread ] "calendar.model" add-init-hook
diff --git a/extra/calendar/summary.txt b/extra/calendar/summary.txt
index e2d2488d59..4cc85fd2b9 100644
--- a/extra/calendar/summary.txt
+++ b/extra/calendar/summary.txt
@@ -1 +1 @@
-Date and time classes
+Timestamp model updated every second