diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index 37e985c..c37003b 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "spanner",
-  "version": "0.3.3",
+  "version": "0.3.4",
   "description": "Connect and interact with Spanner data using natural language.",
   "author": {
     "name": "Google LLC",
diff --git a/.codex-plugin/plugin.json b/.codex-plugin/plugin.json
index d4c1af7..b549cff 100644
--- a/.codex-plugin/plugin.json
+++ b/.codex-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "spanner",
-  "version": "0.3.3",
+  "version": "0.3.4",
   "description": "Connect and interact with Spanner data using natural language.",
   "author": {
     "name": "Google LLC",
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index b0cf8d0..bf7b733 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.3.3"
+  ".": "0.3.4"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4b1a73..5ad2a27 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.3.4](https://github.com/gemini-cli-extensions/spanner/compare/0.3.3...0.3.4) (2026-08-05)
+
+
+### Features
+
+* **deps:** update dependency googleapis/mcp-toolbox to v1.8.0 ([#125](https://github.com/gemini-cli-extensions/spanner/issues/125)) ([fa88644](https://github.com/gemini-cli-extensions/spanner/commit/fa886441aecdc9bbba6842c15fdb9f2bcfb72130))
+
 ## [0.3.3](https://github.com/gemini-cli-extensions/spanner/compare/0.3.2...0.3.3) (2026-08-03)
 
 
diff --git a/README.md b/README.md
index 4afb8bb..e68fd9e 100644
--- a/README.md
+++ b/README.md
@@ -81,8 +81,8 @@ For the latest version, check the [releases page][releases].
 <summary id="antigravity">Antigravity</summary>
 
 You can use either of these two agents for Antigravity:
-- [Antigravity CLI](https://github.com/google-gemini/gemini-cli) version **v0.3.3** or higher
-- [Antigravity 2.0](https://antigravity.google/product/antigravity-2) version **v0.3.3** or higher.
+- [Antigravity CLI](https://github.com/google-gemini/gemini-cli) version **v0.3.4** or higher
+- [Antigravity 2.0](https://antigravity.google/product/antigravity-2) version **v0.3.4** or higher.
 
 <blockquote>
 💡 <strong>Tip — Migrating from Gemini CLI?</strong><br>
@@ -101,7 +101,7 @@ See <a href="https://antigravity.google/docs/gcli-migration">Migrating from Gemi
 **1. Clone the Repo:**
 
 ```bash
-git clone --branch 0.3.3 https://github.com/gemini-cli-extensions/spanner.git
+git clone --branch 0.3.4 https://github.com/gemini-cli-extensions/spanner.git
 ```
 
 **2. Install the skills:**
@@ -192,7 +192,7 @@ You can install skills using the `npx skills` command.
 Run the following command in your terminal to automatically download and register the skills:
 
 ```bash
-npx skills add https://github.com/gemini-cli-extensions/spanner/tree/0.3.3
+npx skills add https://github.com/gemini-cli-extensions/spanner/tree/0.3.4
 ```
 
 For detailed info check out the [Skills npm package](https://www.npmjs.com/package/skills).
diff --git a/gemini-extension.json b/gemini-extension.json
index 96f79cd..8ba2476 100644
--- a/gemini-extension.json
+++ b/gemini-extension.json
@@ -1,6 +1,6 @@
 {
   "name": "spanner",
-  "version": "0.3.3",
+  "version": "0.3.4",
   "description": "Connect and interact with Spanner data using natural language.",
   "contextFileName": "SPANNER.md",
   "settings": [
diff --git a/plugin.json b/plugin.json
index a94daec..d4e4b01 100644
--- a/plugin.json
+++ b/plugin.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
   "name": "spanner",
-  "version": "0.3.3",
+  "version": "0.3.4",
   "description": "Connect and interact with Spanner data using natural language.",
   "author": {
     "name": "Google LLC",