diff --git a/binaries/data/config/default.cfg b/binaries/data/config/default.cfg
index 461337d210..d5ea8d4d4d 100644
--- a/binaries/data/config/default.cfg
+++ b/binaries/data/config/default.cfg
@@ -344,9 +344,9 @@ zoom.out = 4
 [lobby]
 chattimestamp = false               ; Show time chat message was posted
 history = 0                         ; Number of past messages to display on join
-room = "arena20"                    ; Default MUC room to join
+room = "arena21"                    ; Default MUC room to join
 server = "lobby.wildfiregames.com"  ; Address of lobby server
-xpartamupp = "wfgbot20"             ; Name of the server-side xmpp client that manage games
+xpartamupp = "wfgbot21"             ; Name of the server-side xmpp client that manage games
 
 [mod]
 enabledmods = "mod public"
diff --git a/binaries/data/mods/public/mod.json b/binaries/data/mods/public/mod.json
index 4fd3e745ab..185fe3f634 100644
--- a/binaries/data/mods/public/mod.json
+++ b/binaries/data/mods/public/mod.json
@@ -1,6 +1,6 @@
 {
 	"name": "0ad",
-	"version": "0.0.20",
+	"version": "0.0.21",
 	"label": "0 A.D. Empires Ascendant",
 	"url": "play0ad.com",
 	"description": "A free, open-source, historical RTS game.",
diff --git a/source/ps/Pyrogenesis.cpp b/source/ps/Pyrogenesis.cpp
index ee7d76a143..a0778993b5 100644
--- a/source/ps/Pyrogenesis.cpp
+++ b/source/ps/Pyrogenesis.cpp
@@ -24,7 +24,7 @@
 #include "lib/sysdep/sysdep.h"
 #include "lib/svn_revision.h"
 
-const char engine_version[] = "0.0.20";
+const char engine_version[] = "0.0.21";
 
 // convert contents of file <in_filename> from char to wchar_t and
 // append to <out> file.