diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2b19e107fd7..f39a79773e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,21 +14,26 @@ full changeset diff at the end of each section.
 
 Current Trunk
 -------------
+
+v129
+----
+
  - Add a `BinaryenDataSegmentRef` type to the C API. (#8286)
    - Add `BinaryenGetDataSegment` and `BinaryenGetDataSegmentByIndex` to the C API, which allow looking up a data segment by name or index.
    - Add `BinaryenDataSegmentGetName` to the C API, which allows looking up a data segment's name.
    - Convert `BinaryenGetMemorySegmentByteOffset`, `BinaryenGetMemorySegmentByteLength`, `BinaryenGetMemorySegmentPassive` and `BinaryenCopyMemorySegmentData` to take a `BinaryenDataSegmentRef` instead of a name.
    - Add `module.getDataSegment`, `module.getDataSegmentByIndex` to the JS API, which allows looking up a data segment by name or index.
    - Convert `module.getMemorySegmentInfo` to take a data segment reference instead of a name, and return the name as part of the info.
-
-- Add support for non-nullable table types and initialization expressions for
-  tables. This comes with a breaking change to C API: `BinaryenAddTable` takes
-  an additional `BinaryenExpressionRef` parameter to provide an initialization
-  expression. This may be set to NULL for tables without an initializer. In JS
-  this parameter is optional and so is not breaking. (#8405)
-- MinifyImportsAndExports now has a new output format using JSON. This was
-  changed while fixing bugs with colliding module names (to avoid two breaking
-  changes to the output). (#8550)
+ - Add support for non-nullable table types and initialization expressions for
+   tables. This comes with a breaking change to C API: `BinaryenAddTable` takes
+   an additional `BinaryenExpressionRef` parameter to provide an initialization
+   expression. This may be set to NULL for tables without an initializer. In JS
+   this parameter is optional and so is not breaking. (#8405)
+ - [multibyte] Add multibyte array store and load instructions. (#8059, #8504)
+ - MinifyImportsAndExports now has a new output format using JSON. This was
+   changed while fixing bugs with colliding module names (to avoid two breaking
+   changes to the output). (#8550)
+ - Update from C++17 to C++20 (#8218)
 
 v128
 ----
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ae653bd4b71..4cf32bc6481 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ cmake_minimum_required(VERSION 3.16.3)
 # Needed for C++17 (std::path)
 set(CMAKE_OSX_DEPLOYMENT_TARGET "10.15" CACHE STRING "Minimum OS X deployment version")
 
-project(binaryen LANGUAGES C CXX VERSION 128)
+project(binaryen LANGUAGES C CXX VERSION 129)
 include(GNUInstallDirs)
 
 # The C++ standard whose features are required to build Binaryen.