diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index dc96ffd..2537c1f 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.3.143"
+  ".": "0.4.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 137dc17..1f16e14 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## [0.4.0](https://github.com/helbertm/hSQLite-Editor/compare/hsqlite-editor-v0.3.143...hsqlite-editor-v0.4.0) (2026-07-23)
+
+
+### Features
+
+* **help:** add feature request shortcut ([f246330](https://github.com/helbertm/hSQLite-Editor/commit/f246330286559528d397388b7d3696ce1275d303))
+* **schema:** keep quick guide open in empty state ([60d9d3c](https://github.com/helbertm/hSQLite-Editor/commit/60d9d3c3e0e71e2c1eb2d51b7f1f36a11c1feb0a))
+
+
+### Bug Fixes
+
+* **release:** support external attestation bundles ([9e0b2ef](https://github.com/helbertm/hSQLite-Editor/commit/9e0b2ef0f244c1904d5aff37073fb60b31ded928))
+
 ## [0.3.143](https://github.com/helbertm/hSQLite-Editor/compare/hsqlite-editor-v0.3.142...hsqlite-editor-v0.3.143) (2026-06-12)
 
 ### Initial Open-Source Release
diff --git a/index.html b/index.html
index 50f1772..24f9f2d 100644
--- a/index.html
+++ b/index.html
@@ -4,7 +4,7 @@
   <meta charset="UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
   <link rel="icon" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Crect x='4' y='4' width='24' height='24' rx='6' fill='%23111827'/%3E%3Cellipse cx='16' cy='11' rx='7' ry='3' fill='none' stroke='%23f9fafb' stroke-width='2'/%3E%3Cpath d='M9 11v10c0 1.7 3.1 3 7 3s7-1.3 7-3V11' fill='none' stroke='%23f9fafb' stroke-width='2'/%3E%3C/svg%3E" />
-  <title>hSQLite Editor v0.3.143</title>
+  <title>hSQLite Editor v0.4.0</title>
 
   <style>
 /* Tokens ownership */
@@ -5203,7 +5203,7 @@
   <div id="appRoot">
   <header class="app-header">
     <div class="brand-block">
-      <h1 data-i18n-ignore>hSQLite Editor <span class="version-pill" id="appVersionPill">v0.3.143</span></h1>
+      <h1 data-i18n-ignore>hSQLite Editor <span class="version-pill" id="appVersionPill">v0.4.0</span></h1>
       <div class="subtitle" data-i18n="app.subtitle">Para trabalhar e estudar</div>
     </div>
 
@@ -6014,7 +6014,7 @@ <h1 id="bootScreenTitle" data-i18n="boot.preparing">Preparando hSQLite Editor</h
       <h1 data-i18n="offline.unavailable">Modo offline indisponível</h1>
       <p data-i18n="offline.description">O artefato atual deveria funcionar totalmente offline. Se esta tela apareceu, o arquivo foi gerado de forma incompleta ou está corrompido.</p>
       <div class="offline-guide" data-i18n-html="offline.guideHtml">
-        <strong>O esperado:</strong> ao abrir <code id="offlineHtmlFileName">hSQLite-Editor-v0.3.143.html</code> pelo navegador, todos os recursos necessários já devem estar embutidos no arquivo.
+        <strong>O esperado:</strong> ao abrir <code id="offlineHtmlFileName">hSQLite-Editor-v0.4.0.html</code> pelo navegador, todos os recursos necessários já devem estar embutidos no arquivo.
         <br><br>
         <strong>O que verificar:</strong>
         <ul>
@@ -27013,8 +27013,9 @@ <h1 data-i18n="offline.unavailable">Modo offline indisponível</h1>
 
 window.__HSQLITE_BOOT__ = {
   "release": {
-    "version": "0.3.143",
+    "version": "0.4.0",
     "versions": [
+      "0.4.0",
       "0.3.143",
       "0.3.142",
       "0.3.141",
@@ -27162,6 +27163,11 @@ <h1 data-i18n="offline.unavailable">Modo offline indisponível</h1>
       "0.2.0"
     ],
     "notesByVersion": {
+      "0.4.0": [
+        "**help:** add feature request shortcut ([f246330](https://github.com/helbertm/hSQLite-Editor/commit/f246330286559528d397388b7d3696ce1275d303))",
+        "**schema:** keep quick guide open in empty state ([60d9d3c](https://github.com/helbertm/hSQLite-Editor/commit/60d9d3c3e0e71e2c1eb2d51b7f1f36a11c1feb0a))",
+        "**release:** support external attestation bundles ([9e0b2ef](https://github.com/helbertm/hSQLite-Editor/commit/9e0b2ef0f244c1904d5aff37073fb60b31ded928))"
+      ],
       "0.3.143": [
         "ship the local-first SQLite workspace as a standalone, offline-capable HTML application with no application backend",
         "provide complete interface translations in English, Brazilian Portuguese, and Spanish, targeting WCAG 2.2 AA accessibility",
diff --git a/package-lock.json b/package-lock.json
index 8b37456..38cf881 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "hsqlite-editor",
-  "version": "0.3.143",
+  "version": "0.4.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "hsqlite-editor",
-      "version": "0.3.143",
+      "version": "0.4.0",
       "license": "MIT",
       "devDependencies": {
         "@axe-core/playwright": "4.12.1",
diff --git a/package.json b/package.json
index edfd13c..9f80d97 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "description": "A local-first, offline-capable SQLite editor distributed as one standalone HTML file.",
   "private": true,
   "type": "module",
-  "version": "0.3.143",
+  "version": "0.4.0",
   "license": "MIT",
   "author": "hSQLite Editor contributors",
   "homepage": "https://helbertm.github.io/hSQLite-Editor/",
diff --git a/packaging/linux/io.github.helbertm.hsqlite-editor.metainfo.xml b/packaging/linux/io.github.helbertm.hsqlite-editor.metainfo.xml
index fa408cc..a844081 100644
--- a/packaging/linux/io.github.helbertm.hsqlite-editor.metainfo.xml
+++ b/packaging/linux/io.github.helbertm.hsqlite-editor.metainfo.xml
@@ -34,7 +34,7 @@
   <url type="bugtracker">https://github.com/helbertm/hSQLite-Editor/issues</url>
   <url type="vcs-browser">https://github.com/helbertm/hSQLite-Editor</url>
   <releases>
-    <release version="0.3.143" date="2026-06-12" type="stable" /> <!-- x-release-please-version -->
+    <release version="0.4.0" date="2026-07-23" type="stable" /> <!-- x-release-please-version -->
   </releases>
   <content_rating type="oars-1.1" />
 </component>
diff --git a/sbom.spdx.json b/sbom.spdx.json
index 40294cb..a362447 100644
--- a/sbom.spdx.json
+++ b/sbom.spdx.json
@@ -2,19 +2,19 @@
   "spdxVersion": "SPDX-2.3",
   "dataLicense": "CC0-1.0",
   "SPDXID": "SPDXRef-DOCUMENT",
-  "name": "hSQLite Editor 0.3.143 SBOM",
-  "documentNamespace": "https://github.com/helbertm/hSQLite-Editor/releases/tag/hsqlite-editor-v0.3.143/sbom.spdx.json",
+  "name": "hSQLite Editor 0.4.0 SBOM",
+  "documentNamespace": "https://github.com/helbertm/hSQLite-Editor/releases/tag/hsqlite-editor-v0.4.0/sbom.spdx.json",
   "creationInfo": {
-    "created": "2026-06-12T00:00:00Z",
+    "created": "2026-07-23T00:00:00Z",
     "creators": [
-      "Tool: hSQLite Editor repo-owned SBOM generator@0.3.143"
+      "Tool: hSQLite Editor repo-owned SBOM generator@0.4.0"
     ]
   },
   "packages": [
     {
       "name": "hSQLite Editor",
       "SPDXID": "SPDXRef-Package-hSQLite-Editor",
-      "versionInfo": "0.3.143",
+      "versionInfo": "0.4.0",
       "downloadLocation": "https://github.com/helbertm/hSQLite-Editor",
       "filesAnalyzed": false,
       "primaryPackagePurpose": "APPLICATION",