diff --git a/Lib/Formatter/Html.php b/Lib/Formatter/Html.php
index 531a7c4..1cf1caf 100644
--- a/Lib/Formatter/Html.php
+++ b/Lib/Formatter/Html.php
@@ -141,6 +141,7 @@ class Html extends Formatter {
         }
 
         echo static::template(array(
+            'version' => $info['version'],
             'title' => $context['title'],
             'content' => $panel,
         ));
diff --git a/Lib/Logger.php b/Lib/Logger.php
index ccd2126..fdc1b67 100644
--- a/Lib/Logger.php
+++ b/Lib/Logger.php
@@ -23,13 +23,14 @@ class Logger {
         return '(n-a)';
     }
 
-    public static function start() {
+    public static function start($data = array()) {
         self::$start = microtime(true);
 
-        self::$data = array(
+        self::$data = $data + array(
             'ip' => self::ip(),
             'date' => date('d.m.Y H:i:s'),
             'func' => '(none)',
+            'version' => '(none)',
             'error' => ''
         );
     }
diff --git a/Lib/WebService.php b/Lib/WebService.php
index 0dcf1af..137a57a 100644
--- a/Lib/WebService.php
+++ b/Lib/WebService.php
@@ -10,13 +10,19 @@ abstract class WebService
     private $func = null;
     private $status = 200;
 
+    private $version = null;
+
+    public function __construct($version) {
+        $this->version = $version;
+    }
+
     /**
      * Treat the current request and output the result. This is the only
      * method that should be called on the webservice directly !
      */
     public function Run()
     {
-        Logger::start();
+        Logger::start(array('version' => $this->version));
 
         $renderer = new Renderer();
 
diff --git a/index.php b/index.php
index 1158010..7b4af60 100644
--- a/index.php
+++ b/index.php
@@ -2,7 +2,10 @@
 
 namespace BSR;
 
+/** @var string $version version number */
+$ws_version = '1.0.0';
+
 require_once('Lib/autoloader.php');
 
-$web = new NetBiblio();
+$web = new NetBiblio($ws_version);
 $web->Run();
diff --git a/templates/layout.html b/templates/layout.html
index c9ea2c0..2f00480 100644
--- a/templates/layout.html
+++ b/templates/layout.html
@@ -17,7 +17,7 @@
                     <span class="icon-bar"></span>
                     <span class="icon-bar"></span>
                 </button>
-                <a class="navbar-brand" href="/">BSR WebService</a>
+                <a class="navbar-brand" href="/">BSR WebService [{{ version }}]</a>
             </div>
 
             <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">