diff --git a/gradle.properties b/gradle.properties
index 164c4465e5..cbbd63ee04 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,8 +9,8 @@ kotlin.stdlib.default.dependency=false
 kotlin.jvm.target.validation.mode=error
 
 # Mod properties
-isUnstable=false
-modVersion=1.108.4
+isUnstable=true
+modVersion=1.109.0
 
 # Minecraft properties: We want to configure this here so we can read it in settings.gradle
 mcVersion=1.20.1
diff --git a/projects/core/src/main/resources/data/computercraft/lua/rom/help/changelog.md b/projects/core/src/main/resources/data/computercraft/lua/rom/help/changelog.md
index 7ab1bca844..2a0a0c717c 100644
--- a/projects/core/src/main/resources/data/computercraft/lua/rom/help/changelog.md
+++ b/projects/core/src/main/resources/data/computercraft/lua/rom/help/changelog.md
@@ -1,3 +1,17 @@
+# New features in CC: Tweaked 1.109.0
+
+* Update to Lua 5.2
+  * `getfenv`/`setfenv` now only work on Lua functions.
+  * Add support for `goto`.
+  * Remove support for dumping and loading binary chunks.
+* File handles, HTTP requests and websocket messages now use raw bytes rather than converting to UTF-8.
+* Add `allow_repetitions` option to `textutils.serialiseJSON`.
+* Track memory allocated by computers.
+
+Several bug fixes:
+* Fix error when using position captures and backreferences in string patterns (e.g. `()(%1)`).
+* Fix formatting non-real numbers with `%d`.
+
 # New features in CC: Tweaked 1.108.4
 
 * Rewrite `@LuaFunction` generation to use `MethodHandle`s instead of ASM.
diff --git a/projects/core/src/main/resources/data/computercraft/lua/rom/help/whatsnew.md b/projects/core/src/main/resources/data/computercraft/lua/rom/help/whatsnew.md
index 75f36b1f42..b300dd090a 100644
--- a/projects/core/src/main/resources/data/computercraft/lua/rom/help/whatsnew.md
+++ b/projects/core/src/main/resources/data/computercraft/lua/rom/help/whatsnew.md
@@ -1,13 +1,15 @@
-New features in CC: Tweaked 1.108.4
+New features in CC: Tweaked 1.109.0
 
-* Rewrite `@LuaFunction` generation to use `MethodHandle`s instead of ASM.
-* Refactor `ComputerThread` to provide a cleaner interface.
-* Remove `disable_lua51_features` config option.
-* Update several translations (Sammy).
+* Update to Lua 5.2
+  * `getfenv`/`setfenv` now only work on Lua functions.
+  * Add support for `goto`.
+  * Remove support for dumping and loading binary chunks.
+* File handles, HTTP requests and websocket messages now use raw bytes rather than converting to UTF-8.
+* Add `allow_repetitions` option to `textutils.serialiseJSON`.
+* Track memory allocated by computers.
 
 Several bug fixes:
-* Fix monitor peripheral becoming "detached" after breaking and replacing a monitor.
-* Fix signs being empty when placed.
-* Fix several inconsistencies with mount error messages.
+* Fix error when using position captures and backreferences in string patterns (e.g. `()(%1)`).
+* Fix formatting non-real numbers with `%d`.
 
 Type "help changelog" to see the full version history.