diff --git a/CHANGELOG.md b/CHANGELOG.md
index 293dd1e..89e8620 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,17 @@
 All notable changes to this project will be documented in this file. See
 [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [5.0.0](https://github.com/svange/openbrain/compare/v4.5.3...v5.0.0) (2024-07-27)
+
+
+### ⚠ BREAKING CHANGES
+
+* old events in ob-api will not trigger until their detail-types are updated to `!Sub '${ObToolEventDetailType} - ${AWS::StackName}'`
+
+### Bug Fixes
+
+* Added infra stack name to tool event source to disambiguate tool activations. ([2235c96](https://github.com/svange/openbrain/commit/2235c966b3768e29bc8d69cd2d8b61829ae5f920))
+
 ## [4.5.3](https://github.com/svange/openbrain/compare/v4.5.2...v4.5.3) (2024-07-27)
 
 
diff --git a/openbrain/__init__.py b/openbrain/__init__.py
index 8bd8480..0c6ec35 100644
--- a/openbrain/__init__.py
+++ b/openbrain/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "4.5.3"
+__version__ = "5.0.0"
 
 # import os
 # from pathlib import Path
diff --git a/pyproject.toml b/pyproject.toml
index ccfb484..fef2dc1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "openbrain"
-version = "4.5.3"
+version = "5.0.0"
 description = "A package to interact with generative AI and build specialized generative AI workflows. This project is dual-licensed under AGPL-3.0 and a separate commercial license."
 authors = ["Samuel Vange <7166607+svange@users.noreply.github.com>"]
 readme = "README.md"