diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a0c61e..910d336 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [121.0.0](https://github.com/grain-lang/libbinaryen/compare/v120.0.0...v121.0.0) (2025-03-03)
+
+
+### ⚠ BREAKING CHANGES
+
+* Upgrade to Binaryen v121 ([#101](https://github.com/grain-lang/libbinaryen/issues/101))
+
+### Features
+
+* Upgrade to Binaryen v121 ([#101](https://github.com/grain-lang/libbinaryen/issues/101)) ([cc960c8](https://github.com/grain-lang/libbinaryen/commit/cc960c86c559ab6c86a5d9c529a0416c029d480e))
+
 ## [120.0.0](https://github.com/grain-lang/libbinaryen/compare/v119.0.0...v120.0.0) (2025-03-02)
 
 
diff --git a/libbinaryen.opam b/libbinaryen.opam
index 43052ac..766a8c8 100644
--- a/libbinaryen.opam
+++ b/libbinaryen.opam
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "120.0.0"
+version: "121.0.0"
 synopsis: "Libbinaryen packaged for OCaml"
 maintainer: "blaine@grain-lang.org"
 author: "Blaine Bublitz"
diff --git a/package.json b/package.json
index 17fdddd..cfc8210 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@grain/libbinaryen",
-  "version": "120.0.0",
+  "version": "121.0.0",
   "description": "Libbinaryen packaged for OCaml.",
   "author": "Blaine Bublitz <blaine@grain-lang.org>",
   "license": "Apache-2.0",