diff --git a/changelog.txt b/changelog.txt
index 44d93547..a1d6cf56 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -4865,7 +4865,7 @@ Other bugfixes:
 - fixed grid drawing for binary variants
 
 
-2022-12-18 00:59 Update 12.1h:
+2023-01-08 00:59 Update 12.1h:
 
 Bug fixes:
 - fixed context help getting stuck in corner stats mode
@@ -4878,3 +4878,14 @@ Further improvements to the "3D style" (embed 2D in a 3D geometry) feature:
 - fixed movement animations
 - better diagnostics when an embedding does not work
 - fixed a bug rendering band model without shader
+
+2023-02-05 11:27 Update 12.1i:
+
+Further improvements to the "3D style" (embed 2D in a 3D geometry) feature:
+- Overall better design fixes various small errors, including nicer floor shapes, radar, shmup, and 3D models.
+- Six new embeddings of the Euclidean cylinder.
+- Hints how to change settings if the current embedding does not work.
+- some crashes have been fixed (in Zebra/ Reptiles, thanks to Masala for the report; also crashes related to possible missing shadow models)
+
+Also fixed a bug generating Dice in some tessellations.
+
diff --git a/hyper.h b/hyper.h
index d4d4ccec..0f573dd0 100644
--- a/hyper.h
+++ b/hyper.h
@@ -13,8 +13,8 @@
 #define _HYPER_H_
 
 // version numbers
-#define VER "12.1h"
-#define VERNUM_HEX 0xA928
+#define VER "12.1i"
+#define VERNUM_HEX 0xA929
 
 #include "sysconfig.h"