diff --git a/data-sources/data.server_headers.php b/data-sources/data.server_headers.php
index 2b71a06..7e695d9 100755
--- a/data-sources/data.server_headers.php
+++ b/data-sources/data.server_headers.php
@@ -1,32 +1,32 @@
 <?php
 
 	require_once(TOOLKIT . '/class.datasource.php');
-	
+
 	Class datasourceServer_Headers extends Datasource{
 
-		function about(){
+		public function about(){
 			return array(
 					 'name' => 'Server Headers',
 					 'author' => array(
 							'name' => 'Symphony Team',
 							'website' => 'http://symphony-cms.com'),
 					 'version' => '1.2',
-					 'release-date' => '2011-03-22');	
+					 'release-date' => '2011-03-22');
 		}
 
-		function grab(&$param_pool){
-			
+		public function execute(array &$param_pool = null) {
+
 			$result = new XMLElement("server-headers");
-			
+
 			$included = Symphony::Configuration()->get('include', 'server-headers');
 			$included = explode(',', $included);
-			
+
 			foreach($included as $header){
 				if(strlen(trim($_SERVER[$header])) == 0) continue;
 				$result->appendChild(new XMLElement(strtolower(str_replace('_', '-', $header)), General::sanitize($_SERVER[$header])));
 			}
-			
+
 			return $result;
-			
+
 		}
-	}
\ No newline at end of file
+	}
diff --git a/extension.meta.xml b/extension.meta.xml
index 856ba4b..4607ab9 100644
--- a/extension.meta.xml
+++ b/extension.meta.xml
@@ -12,7 +12,10 @@
 		</author>
 	</authors>
 	<releases>
+		<release version="2.0.0" date="TBA" min="4.0.0" max="4.x.x" php-min="5.6.x" php-max="7.x.x">
+			- Update for Symphony 4.x
+		</release>
 		<release version="1.2" date="2011-03-22" min="2.0.6" />
 		<release version="1.3" date="2011-08-28" min="2.3.0" />
 	</releases>
-</extension>
\ No newline at end of file
+</extension>