diff --git a/CHANGELOG.md b/CHANGELOG.md
index 425569da..3ad10dea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,18 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/), and this
 
 ## [Unreleased]
 
+### Fixed
+
+- **MPU completion race handling** — fixed race condition in multipart upload completion logic that could cause incorrect finalization timing. (PR #121)
+- **CLI lint issues** — resolved linting warnings in CLI code. (PR #121)
+- **CLI MPU batch override removal** — removed unnecessary CLI-level MPU batch override that conflicted with engine-level configuration. (PR #121)
+- **MPU completion timing** — corrected timing logic in MPU completion operations to ensure accurate metrics reporting. (PR #121)
+- **Terminal metrics refresh** — fixed TUI metrics display refresh to ensure real-time updates are rendered correctly. (PR #121)
+- **Composite read batch dispatch** — fixed dispatch logic for composite read operations to prevent batch handling errors. (PR #121)
+- **MPU scheduling and finalization** — improved MPU task scheduling and finalization to handle edge cases in distributed runs. (PR #121)
+- **Jar-based MPU test helpers** — updated test helper utilities for jar-based MPU testing to improve reliability. (PR #121)
+- **Multi-host headless completion hangs** — fixed issue where multi-host headless runs would hang after completion instead of exiting cleanly. (PR #120)
+
 ## [5.10.2] - 2026-05-19
 
 ### Fixed
diff --git a/VERSION b/VERSION
index 269fb5df..e030a015 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.10.2
+5.10.3
diff --git a/engine/core/spt-base/src/main/resources/config/defaults.yaml b/engine/core/spt-base/src/main/resources/config/defaults.yaml
index b990c8c2..892bf932 100644
--- a/engine/core/spt-base/src/main/resources/config/defaults.yaml
+++ b/engine/core/spt-base/src/main/resources/config/defaults.yaml
@@ -117,7 +117,7 @@ run:
   node: false
   port: 9999
   scenario: null
-  version: 5.10.2
+  version: 5.10.3
 
 log:
   level: info