diff --git a/README.md b/README.md
index d0a03ec..c22a4b2 100644
--- a/README.md
+++ b/README.md
@@ -22,3 +22,19 @@ Extensao Chrome Manifest V3 que adiciona o botao `Arch panel` ao header da pagin
 
 - `manifest.json`: define a extensao e o carregamento do content script
 - `content-script.js`: valida a URL, encontra o header e injeta o botao
+
+## Controle de versao
+
+A versao oficial da extensao fica em `manifest.json`.
+
+Toda alteracao funcional, visual ou tecnica na extensao deve incrementar a terceira casa da versao antes da entrega:
+
+```powershell
+powershell -ExecutionPolicy Bypass -File tools/bump-extension-version.ps1
+```
+
+Quando uma versao especifica for solicitada, informe o valor explicitamente:
+
+```powershell
+powershell -ExecutionPolicy Bypass -File tools/bump-extension-version.ps1 -Version 1.0.25
+```
diff --git a/content-script.js b/content-script.js
index 9ba06c8..b29df45 100644
--- a/content-script.js
+++ b/content-script.js
@@ -794,6 +794,13 @@
             <span>Updated by Refresh data</span>
           </div>
         </div>
+
+        <div class="arch-panel-extension-sidebar-group">
+          <p class="arch-panel-extension-sidebar-label">Extension version</p>
+          <div class="arch-panel-extension-sidebar-data">
+            <span>v${escapeHtml(getExtensionVersion())}</span>
+          </div>
+        </div>
       </aside>
 
       <main class="arch-panel-extension-main-shell">
@@ -833,6 +840,14 @@
     `;
   }
 
+  function getExtensionVersion() {
+    try {
+      return chrome.runtime.getManifest()?.version || "0.0.0";
+    } catch {
+      return "0.0.0";
+    }
+  }
+
   function renderMetricCard(label, value, detail) {
     return `
       <article class="arch-panel-extension-summary-card">
diff --git a/manifest.json b/manifest.json
index 6373d7a..26b46fc 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
-{
+{
   "manifest_version": 3,
   "name": "Arch Panel Injector",
-  "version": "1.0.0",
+  "version": "1.0.3",
   "description": "Insere o botao Arch panel no header do Oracle Workload Workbench.",
   "permissions": [
     "cookies",
@@ -36,3 +36,7 @@
     }
   ]
 }
+
+
+
+
diff --git a/tools/bump-extension-version.ps1 b/tools/bump-extension-version.ps1
new file mode 100644
index 0000000..b1c5d20
--- /dev/null
+++ b/tools/bump-extension-version.ps1
@@ -0,0 +1,65 @@
+param(
+  [string]$Version
+)
+
+$ErrorActionPreference = "Stop"
+
+$repoRoot = Split-Path -Parent $PSScriptRoot
+$manifestPath = Join-Path $repoRoot "manifest.json"
+
+function Test-ExtensionVersion {
+  param([string]$Value)
+
+  if ($Value -notmatch '^\d+\.\d+\.\d+$') {
+    throw "Invalid version '$Value'. Expected format N.N.N, for example 1.0.7."
+  }
+
+  foreach ($part in $Value.Split(".")) {
+    $number = [int64]$part
+
+    if ($number -lt 0 -or $number -gt 65535) {
+      throw "Invalid version '$Value'. Each part must be between 0 and 65535."
+    }
+  }
+}
+
+if (!(Test-Path -LiteralPath $manifestPath)) {
+  throw "manifest.json not found at $manifestPath"
+}
+
+$rawManifest = Get-Content -LiteralPath $manifestPath -Raw
+$manifest = $rawManifest | ConvertFrom-Json
+$currentVersion = [string]$manifest.version
+
+Test-ExtensionVersion -Value $currentVersion
+
+if ($Version) {
+  $nextVersion = $Version.Trim()
+  Test-ExtensionVersion -Value $nextVersion
+} else {
+  $parts = $currentVersion.Split(".")
+  $patch = [int64]$parts[2] + 1
+
+  if ($patch -gt 65535) {
+    throw "Cannot increment patch version beyond 65535."
+  }
+
+  $nextVersion = "$($parts[0]).$($parts[1]).$patch"
+}
+
+$versionPattern = '("version"\s*:\s*")([^"]+)(")'
+$matches = [regex]::Matches($rawManifest, $versionPattern)
+
+if ($matches.Count -ne 1) {
+  throw "Expected exactly one version field in manifest.json, found $($matches.Count)."
+}
+
+$updatedManifest = [regex]::Replace(
+  $rawManifest,
+  $versionPattern,
+  "`${1}$nextVersion`${3}",
+  1
+)
+
+Set-Content -LiteralPath $manifestPath -Value $updatedManifest -Encoding UTF8
+Write-Output "Extension version updated: $currentVersion -> $nextVersion"