diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c14a94a..d00016eb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [5.5.1] - 2026-02-23
+
 ### Added
 
 - Cleanup of non-deterministic files in Node.js, npm, and pnpm layers to prevent unnecessary invalidation of runtime layers for export. ([#1274](https://github.com/heroku/buildpacks-nodejs/pull/1274))
@@ -212,7 +214,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Dropped provides for `node`, `npm`, `pnpm`, `yarn`, `node_modules`, and `node_build_scripts`. ([#1169](https://github.com/heroku/buildpacks-nodejs/pull/1169))
 - Requires `heroku/nodejs` if `package.json`, `index.js`, or `server.js` is detected. ([#1169](https://github.com/heroku/buildpacks-nodejs/pull/1169))
 
-[unreleased]: https://github.com/heroku/buildpacks-nodejs/compare/v5.5.0...HEAD
+[unreleased]: https://github.com/heroku/buildpacks-nodejs/compare/v5.5.1...HEAD
+[5.5.1]: https://github.com/heroku/buildpacks-nodejs/compare/v5.5.0...v5.5.1
 [5.5.0]: https://github.com/heroku/buildpacks-nodejs/compare/v5.4.3...v5.5.0
 [5.4.3]: https://github.com/heroku/buildpacks-nodejs/compare/v5.4.2...v5.4.3
 [5.4.2]: https://github.com/heroku/buildpacks-nodejs/compare/v5.4.1...v5.4.2
diff --git a/buildpack.toml b/buildpack.toml
index 543e8f25..f6ef1046 100644
--- a/buildpack.toml
+++ b/buildpack.toml
@@ -2,7 +2,7 @@ api = "0.10"
 
 [buildpack]
 id = "heroku/nodejs"
-version = "5.5.0"
+version = "5.5.1"
 name = "Heroku Node.js"
 homepage = "https://github.com/heroku/buildpacks-nodejs"
 description = "Heroku's buildpack for Node.js applications."