diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index 61a3492..9194556 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "data-agent-kit-starter-pack",
-  "version": "0.2.0",
+  "version": "0.4.0",
   "description": "This plugin provides a specialized suite of skills for data engineers and database practitioners working on Google Cloud. It acts as an expert assistant, allowing you to use natural language prompts in your preferred coding agent to architect complex data pipelines, transform data with dbt, write Spark and BigQuery SQL notebooks, and orchestrate end-to-end workflows across GCP's data ecosystem.",
   "author": {
     "name": "Google LLC",
diff --git a/.codex-plugin/plugin.json b/.codex-plugin/plugin.json
index 09958c1..f28b69f 100644
--- a/.codex-plugin/plugin.json
+++ b/.codex-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "data-agent-kit-starter-pack",
-  "version": "0.2.0",
+  "version": "0.4.0",
   "description": "This plugin provides a specialized suite of skills for data engineers and database practitioners working on Google Cloud. It acts as an expert assistant, allowing you to use natural language prompts in your preferred coding agent to architect complex data pipelines, transform data with dbt, write Spark and BigQuery SQL notebooks, and orchestrate end-to-end workflows across GCP's data ecosystem.",
   "skills": "./skills/",
   "interface": {
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 10f3091..da59f99 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.2.0"
+  ".": "0.4.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4f5b6f8..c9c3e98 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.4.0](https://github.com/gemini-cli-extensions/data-agent-kit-starter-pack/compare/0.2.0...0.4.0) (2026-06-11)
+
+
+### Miscellaneous Chores
+
+* force release 0.4.0 ([#93](https://github.com/gemini-cli-extensions/data-agent-kit-starter-pack/issues/93)) ([23aab90](https://github.com/gemini-cli-extensions/data-agent-kit-starter-pack/commit/23aab90cf7a198e8481dce1475020e14014a7ebe))
+
 ## [0.2.0](https://github.com/gemini-cli-extensions/data-agent-kit-starter-pack/compare/0.1.4...0.2.0) (2026-05-15)
 
 
diff --git a/README.md b/README.md
index 05c4e84..9ec6cd8 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ agy plugin install https://github.com/gemini-cli-extensions/data-agent-kit-start
 
 Install the extension directly from GitHub:
 ```bash
-gemini extensions install https://github.com/gemini-cli-extensions/data-agent-kit-starter-pack --ref 0.2.0
+gemini extensions install https://github.com/gemini-cli-extensions/data-agent-kit-starter-pack --ref 0.4.0
 ```
 </details>
 
@@ -83,12 +83,12 @@ Run the `claude` command to start the agent, then follow these steps:
 
 **macOS / Linux:**
 ```bash
-CODEX_TAG="0.2.0"; curl -sSL https://raw.githubusercontent.com/gemini-cli-extensions/data-agent-kit-starter-pack/$CODEX_TAG/codex-install.sh | bash -s -- $CODEX_TAG
+CODEX_TAG="0.4.0"; curl -sSL https://raw.githubusercontent.com/gemini-cli-extensions/data-agent-kit-starter-pack/$CODEX_TAG/codex-install.sh | bash -s -- $CODEX_TAG
 ```
 
 **Windows:**
 ```powershell
-$env:CODEX_TAG="0.2.0"; irm "https://raw.githubusercontent.com/gemini-cli-extensions/data-agent-kit-starter-pack/$env:CODEX_TAG/codex-install.ps1" | iex
+$env:CODEX_TAG="0.4.0"; irm "https://raw.githubusercontent.com/gemini-cli-extensions/data-agent-kit-starter-pack/$env:CODEX_TAG/codex-install.ps1" | iex
 ```
 
 2. **Install the plugin in Codex:**
@@ -139,14 +139,14 @@ Edit the configuration file:
 <summary><b>Claude Code</b></summary>
 
 Edit the configuration file:
-`~/.claude/plugins/cache/data-agent-kit-starter-pack-marketplace/data-agent-kit-starter-pack/0.2.0/.claude-mcp.json`
+`~/.claude/plugins/cache/data-agent-kit-starter-pack-marketplace/data-agent-kit-starter-pack/0.4.0/.claude-mcp.json`
 </details>
 
 <details>
 <summary><b>Codex</b></summary>
 
 1. Edit the configuration file:
-`~/.codex/plugins/cache/personal/data-agent-kit-starter-pack/0.2.0/.mcp.json`
+`~/.codex/plugins/cache/personal/data-agent-kit-starter-pack/0.4.0/.mcp.json`
 
 2. Restart Codex.
 </details>
diff --git a/gemini-extension.json b/gemini-extension.json
index 9e1e09f..8405907 100644
--- a/gemini-extension.json
+++ b/gemini-extension.json
@@ -1,6 +1,6 @@
 {
   "name": "data-agent-kit-starter-pack",
-  "version": "0.2.0",
+  "version": "0.4.0",
   "description": "This plugin provides a specialized suite of skills for data engineers and database practitioners working on Google Cloud. It acts as an expert assistant, allowing you to use natural language prompts in your preferred coding agent to architect complex data pipelines, transform data with dbt, write Spark and BigQuery SQL notebooks, and orchestrate end-to-end workflows across GCP's data ecosystem.",
   "mcpServers": {
     "notebook": {
diff --git a/mcp/package.json b/mcp/package.json
index 06b3f39..3071cc2 100644
--- a/mcp/package.json
+++ b/mcp/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google/standalone-notebook-mcp",
-  "version": "0.2.0",
+  "version": "0.4.0",
   "type": "module",
   "description": "Standalone MCP server for notebook manipulation",
   "main": "server.ts",
diff --git a/package.json b/package.json
index 407ae54..be55dc3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "data-agent-kit-starter-pack",
-  "version": "0.2.0",
+  "version": "0.4.0",
   "description": "Developer toolkit for Data Cloud and AI integrations",
   "bin": {
     "notebook-tools": "mcp/dist/index.js"