diff --git a/dat/history b/dat/history
index 23dba2d4c..50cb7ca1a 100644
--- a/dat/history
+++ b/dat/history
@@ -220,6 +220,9 @@ the adopted curses window port, were released as 3.6.2.
 Bart House, who had contributed to the game as a porting 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/.
 
diff --git a/doc/Guidebook.mn b/doc/Guidebook.mn
index 3c36c0b09..edf765d8e 100644
--- a/doc/Guidebook.mn
+++ b/doc/Guidebook.mn
@@ -24,7 +24,7 @@
 .ds vr "NetHack 3.7
 .ds f0 "\*(vr
 .ds f1
-.ds f2 "December 1, 2019
+.ds f2 "December 5, 2019
 .
 .\" A note on some special characters:
 .\" \(lq = left double quote
@@ -5157,9 +5157,12 @@ the adopted curses window port, were released as 3.6.2.
 \fBBart House\fP, who had contributed to the game as a porting team
 participant for decades, joined the NetHack Development Team in late May 2019.
 .pg
+NetHack 3.6.3 was released on December 5, 2019 containing over 190 bug
+fixes to NetHack 3.6.2.
+.pg
 The official NetHack web site is maintained by \fBKen Lorber\fP
 at
-.UR http://www.nethack.org/ .
+.UR https://www.nethack.org/ .
 .pg
 .hn 2
 SPECIAL THANKS
diff --git a/doc/Guidebook.tex b/doc/Guidebook.tex
index 8d7b105e3..633da5574 100644
--- a/doc/Guidebook.tex
+++ b/doc/Guidebook.tex
@@ -45,7 +45,7 @@
 %.au
 \author{Original version - Eric S. Raymond\\
 (Edited and expanded for 3.6 by Mike Stephenson and others)}
-\date{December 1, 2019}
+\date{December 5, 2019}
 
 \maketitle
 
@@ -5760,12 +5760,17 @@ the adopted curses window port, were released as 3.6.2.
 {\it Bart House}, who had contributed to the game as a porting team participant
 for decades, joined the {\it NetHack Development Team} in late May 2019.
 
+%.pg
+\medskip
+NetHack 3.6.3 was released on December 5, 2019 containing over 190 bug
+fixes to NetHack 3.6.2.
+
 %.pg
 \medskip
 \nd The official {\it NetHack\/} web site is maintained by {\it Ken Lorber} at
 {\catcode`\#=11
-\special{html:<a href="http://www.nethack.org/">}}
-http:{\tt /}{\tt /}www.nethack.org{\tt /}.
+\special{html:<a href="https://www.nethack.org/">}}
+https:{\tt /}{\tt /}www.nethack.org{\tt /}.
 {\catcode`\#=11
 \special{html:</a>}}
 
diff --git a/include/patchlevel.h b/include/patchlevel.h
index f86626926..0c8bd7c7a 100644
--- a/include/patchlevel.h
+++ b/include/patchlevel.h
@@ -44,7 +44,7 @@
 /****************************************************************************/
 /* Version 3.6.x */
 
-/*  Patch 3, <insert date here>
+/*  Patch 3, December 5, 2019
  *
  *  Fixed stale 'thrownobj' pointer for returning thrown aklys while engulfed
  *  Fixed uarmh null pointer dereference if a helm of opposite alignment came
@@ -63,6 +63,7 @@
  *  Fixed ignoring of god's wrath when hero injured himself during altar kick 
  *  Fixed several cases where persistent inventory window was not updated
  *  Fixed temple priests or shopkeepers moving over other monsters
+ *  Fixed a crash-causing bug when putting on levitation boots over a sink
  *  Ensured that thrown or kicked objects will end up in bones
  *  Made water go all the way to the edges of level on the Plane of Water
  *  Made clouds disrupt line of sight along the edges of the Plane of Air
@@ -72,6 +73,8 @@
  *    the Windows platform
  *  Improved the layout and display of the player selection dialog used on the
  *     Windows graphical implementation
+ *  Improved performance of some tty versions by reducing the number of 
+ *     function calls made from mapglyph
  *  Allowed the msdos implementation to build with curses and PDCurses
  *  Included over 100 other fixes and improvements as outlined in doc/fixes36.3
  */