diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index beea3f7..1fd56a9 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "0.3.1"
+    ".": "0.4.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7ea033..dcdc8e5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,18 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.4.0](https://github.com/altertable-ai/altertable-lakehouse-python/compare/altertable-lakehouse-v0.3.1...altertable-lakehouse-v0.4.0) (2026-07-24)
+
+
+### Features
+
+* **api:** add upload endpoint and align upsert ([#21](https://github.com/altertable-ai/altertable-lakehouse-python/issues/21)) ([969e54d](https://github.com/altertable-ai/altertable-lakehouse-python/commit/969e54deccdbcf20e1325a8106988cd5a0da09cf))
+
+
+### Documentation
+
+* sync community documents ([#19](https://github.com/altertable-ai/altertable-lakehouse-python/issues/19)) ([4a21043](https://github.com/altertable-ai/altertable-lakehouse-python/commit/4a21043496bec41fa6687e62f1d55a8c93f30bf3))
+
 ## [Unreleased]
 
 ### Added
diff --git a/pyproject.toml b/pyproject.toml
index 81b0d05..7e19b76 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "altertable-lakehouse"
-version = "0.3.1"
+version = "0.4.0"
 description = "Official Python SDK for Altertable Lakehouse API"
 authors = ["Altertable <hello@altertable.ai>"]
 readme = "README.md"