diff --git a/src/ePub/Definition/Package.php b/src/ePub/Definition/Package.php
index <HASH>..<HASH> 100644
--- a/src/ePub/Definition/Package.php
+++ b/src/ePub/Definition/Package.php
@@ -22,6 +22,8 @@ class Package
     public $spine;
 
     public $guide;
+    
+    public $version;
 
     public function __construct()
     {
diff --git a/src/ePub/Resource/OpfResource.php b/src/ePub/Resource/OpfResource.php
index <HASH>..<HASH> 100644
--- a/src/ePub/Resource/OpfResource.php
+++ b/src/ePub/Resource/OpfResource.php
@@ -72,6 +72,9 @@ class OpfResource
         $package = $package ?: new Package();
         $xml     = $this->xml;
 
+        // Epub version:
+        $package->version = (string) $xml['version'];
+        
         $this->processMetadataElement($xml->metadata, $package->metadata);
         $this->processManifestElement($xml->manifest, $package->manifest);
         $this->processSpineElement($xml->spine, $package->spine, $package->manifest);
Extract current spec version of Epub