diff --git a/changelog.txt b/changelog.txt
index 1d6e972e..006f82bf 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -4764,3 +4764,17 @@ Menu improvements:
 - various fixes related to 'orb used' rollback
 - fixed Sol geometry (a bug caused the map to change incorrectly when moving)
 - fixed variations of hyperbolic honeycombs (when a ruleset was available only for the pure honeycomb, loading it would reset variation to pure)
+
+2022-09-15 12:40 Update 12.1:
+- documentation for TES files added
+- an option to select the savefile on startup (settings -> other settings)
+- fixed missing 'too far' messages on Frog-like orbs
+- fixed Teleport and Illusion draining Aether etc on mousing (disregarding Time)
+- fixed a crash problem with tes files in 2.5D
+- fixed a possible crash in raytracer
+- when tes files are loaded, football-colorability is now detected (and used to improve the graphics and gameplay)
+- GPU glitches when rendering long bands should be no more
+- fixed the loading of tessellations/affine/affine-square.tes
+- fixed the crash on converting regular/Archimedean tilings to tes format and generating tree rules
+- improvements to line patterns
+- fixed a possible crash when saving images
diff --git a/hyper.h b/hyper.h
index d64afb0f..f4fb0a23 100644
--- a/hyper.h
+++ b/hyper.h
@@ -13,8 +13,8 @@
 #define _HYPER_H_
 
 // version numbers
-#define VER "12.0z"
-#define VERNUM_HEX 0xA91B
+#define VER "12.1"
+#define VERNUM_HEX 0xA920
 
 #include "sysconfig.h"
 
@@ -129,7 +129,7 @@ void addMessage(string s, char spamtype = 0);
 #define hyperbolic_37 (S7 == 7 && S3 == 3 && !bt::in() && !arcm::in())
 #define hyperbolic_not37 ((S7 > 7 || S3 > 3 || bt::in() || arcm::in()) && hyperbolic)
 #define weirdhyperbolic ((S7 > 7 || S3 > 3 || !STDVAR || bt::in() || arcm::in() || arb::in()) && hyperbolic)
-#define stdhyperbolic (S7 == 7 && S3 == 3 && STDVAR && !bt::in() && !arcm::in())
+#define stdhyperbolic (S7 == 7 && S3 == 3 && STDVAR && !bt::in() && !arcm::in() && !arb::in())
 
 #define cgflags cginf.flags