diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e0b35b16b..8049dcca1b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.9.1] - 2026-04-21
+
+### Fixed
+
+- 🐛 **Missing `aiosqlite` dependency.** Fixed a startup crash (`ModuleNotFoundError: No module named 'aiosqlite'`) when installing Open WebUI via `pip` or `uv` by adding the missing `aiosqlite` package to `pyproject.toml`. The dependency was listed in `requirements.txt` but not in the published package metadata, so it was not installed automatically. [#23916](https://github.com/open-webui/open-webui/issues/23916)
+- 🐛 **Missing `asyncpg` dependency.** Added the missing `asyncpg` package to `pyproject.toml` to prevent the same startup crash for PostgreSQL users. Like `aiosqlite`, it was present in `requirements.txt` but absent from the published package dependencies.
+
 ## [0.9.0] - 2026-04-20
 
 ### Added
diff --git a/package-lock.json b/package-lock.json
index 8efa79c1b4..e3175ba8a0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
 	"name": "open-webui",
-	"version": "0.9.0",
+	"version": "0.9.1",
 	"lockfileVersion": 3,
 	"requires": true,
 	"packages": {
 		"": {
 			"name": "open-webui",
-			"version": "0.9.0",
+			"version": "0.9.1",
 			"dependencies": {
 				"@azure/msal-browser": "^4.5.0",
 				"@codemirror/lang-javascript": "^6.2.2",
diff --git a/package.json b/package.json
index bc1a1c5da3..ab246848c0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "open-webui",
-	"version": "0.9.0",
+	"version": "0.9.1",
 	"private": true,
 	"scripts": {
 		"dev": "npm run pyodide:fetch && vite dev --host",
diff --git a/pyproject.toml b/pyproject.toml
index 27e6faeddf..b6d07a61f7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,6 +32,8 @@ dependencies = [
     "python-mimeparse==2.0.0",
 
     "sqlalchemy==2.0.48",
+    "aiosqlite==0.21.0",
+    "asyncpg==0.30.0",
     "alembic==1.18.4",
     "peewee==3.19.0",
     "peewee-migrate==1.14.3",