diff --git a/lib/AbstractPicoPlugin.php b/lib/AbstractPicoPlugin.php
index c586c29..b732ac2 100644
--- a/lib/AbstractPicoPlugin.php
+++ b/lib/AbstractPicoPlugin.php
@@ -21,7 +21,7 @@
  * @author  Daniel Rudolf
  * @link    http://picocms.org
  * @license http://opensource.org/licenses/MIT The MIT License
- * @version 2.0
+ * @version 2.1
  */
 abstract class AbstractPicoPlugin implements PicoPluginInterface
 {
diff --git a/lib/PicoPluginInterface.php b/lib/PicoPluginInterface.php
index 6add326..85f9dfb 100644
--- a/lib/PicoPluginInterface.php
+++ b/lib/PicoPluginInterface.php
@@ -26,7 +26,7 @@
  * @author  Daniel Rudolf
  * @link    http://picocms.org
  * @license http://opensource.org/licenses/MIT The MIT License
- * @version 2.0
+ * @version 2.1
  */
 interface PicoPluginInterface
 {
diff --git a/lib/PicoTwigExtension.php b/lib/PicoTwigExtension.php
index f61c2c9..0988110 100644
--- a/lib/PicoTwigExtension.php
+++ b/lib/PicoTwigExtension.php
@@ -16,7 +16,7 @@
  * @author  Daniel Rudolf
  * @link    http://picocms.org
  * @license http://opensource.org/licenses/MIT The MIT License
- * @version 2.0
+ * @version 2.1
  */
 class PicoTwigExtension extends Twig_Extension
 {
diff --git a/plugins/DummyPlugin.php b/plugins/DummyPlugin.php
index b17d51c..415103b 100644
--- a/plugins/DummyPlugin.php
+++ b/plugins/DummyPlugin.php
@@ -19,7 +19,7 @@
  * @author  Daniel Rudolf
  * @link    http://picocms.org
  * @license http://opensource.org/licenses/MIT The MIT License
- * @version 2.0
+ * @version 2.1
  */
 class DummyPlugin extends AbstractPicoPlugin
 {