diff --git a/CHANGELOG.md b/CHANGELOG.md
index e616e45..9597221 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,17 @@
+## 0.4.0 (2024-03-07)
+
+### Feat
+
+- BACK-40 added /telemetry path
+
+### Fix
+
+- **next-event**: use pydantic.model_validate_json
+
+### Refactor
+
+- updated constants
+
 ## 0.3.0 (2024-02-27)
 
 ### Feat
diff --git a/VERSION b/VERSION
index 9325c3c..60a2d3e 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.3.0
\ No newline at end of file
+0.4.0
\ No newline at end of file
diff --git a/app/__init__.py b/app/__init__.py
index 493f741..6a9beea 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -1 +1 @@
-__version__ = "0.3.0"
+__version__ = "0.4.0"
diff --git a/pyproject.toml b/pyproject.toml
index 94769b4..56574b0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ build-backend = "poetry.core.masonry.api"
 #-->> Metadata <<------------------------------------------
 [tool.poetry]
 name = "backend"
-version = "0.3.0"
+version = "0.4.0"
 description = "Slick Telemetry backend written in python"
 authors = ["Slick Telemetry <contact.@slicktelemetry.com>"]
 readme = "README.md"
@@ -75,7 +75,7 @@ line-length = 120
 target-version = ["py312"]
 
 [tool.commitizen]
-version = "0.3.0"
+version = "0.4.0"
 version_files = [
     "app/__init__.py:__version__",
     "pyproject.toml:version",