diff --git a/doc/Guidebook.txt b/doc/Guidebook.txt
index 2259c1293..4deff64cc 100644
--- a/doc/Guidebook.txt
+++ b/doc/Guidebook.txt
@@ -6039,8 +6039,11 @@
           team participant for decades, joined the NetHack Development Team
           in late May 2019.
 
+               NetHack  3.6.3  was  released on December 5, 2019 containing
+          over 190 bug fixes to NetHack 3.6.2.
+
                The official NetHack web site is maintained by Ken Lorber at
-          http://www.nethack.org/.
+          https://www.nethack.org/.
 
           12.1.  SPECIAL THANKS