diff --git a/doc/history.txt b/doc/history.txt
index 7e5d793c..dc74390e 100644
--- a/doc/history.txt
+++ b/doc/history.txt
@@ -1,6 +1,24 @@
 Version history
 ===============
 
+0.10.21
+-------
+
+2024-03-08
+
+Added geoo's new singleplayer pack with 106 levels. They're sorted by theme:
+Wrappy puzzles on cylindrical/toroidal maps, flowy puzzles about crowd control,
+classy large-scale strategic puzzles, loony puzzles about physics curiosities,
+and sketchy outtakes.
+
+Added two new miniatures by geoo: Bridges, and Mini Cellar.
+
+During insert mode, change the tooltip "Replaying. Click to play from here."
+to "Insert Mode: Click to insert." (You're in insert mode while the tweaker
+is open, unless you reconfigure this in the options menu.)
+
+
+
 0.10.20
 -------
 
diff --git a/src/net/version.d b/src/net/version.d
index 99ec865f..e00ae083 100644
--- a/src/net/version.d
+++ b/src/net/version.d
@@ -12,7 +12,7 @@ import std.conv;
 import std.range;
 import std.string;
 
-private immutable _gameVersion = Version(0, 10, 20);
+private immutable _gameVersion = Version(0, 10, 21);
 const(Version) gameVersion() { return _gameVersion; }
 
 struct Version {