diff --git a/CHANGELOG.md b/CHANGELOG.md
index 668bae7..54c5367 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to `benchmarks` will be documented here.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/).
 
+## [5.4.0] - 2026-07-15
+
+### Features
+
+- feat(bench): split each cell into startup and work against a floor fixture (#173)
+
 ## [5.3.2] - 2026-07-15
 
 ### Bug Fixes
diff --git a/VERSION b/VERSION
index 84197c8..8a30e8f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.3.2
+5.4.0