diff --git a/lib/Pico.php b/lib/Pico.php
index 9a9bb54..3ec5a87 100644
--- a/lib/Pico.php
+++ b/lib/Pico.php
@@ -70,7 +70,7 @@ class Pico
      *
      * @var int
      */
-    public const API_VERSION = 3;
+    public const API_VERSION = 4;
 
     /**
      * Sort files in alphabetical ascending order
diff --git a/plugins/DummyPlugin.php b/plugins/DummyPlugin.php
index 2a28133..243727d 100644
--- a/plugins/DummyPlugin.php
+++ b/plugins/DummyPlugin.php
@@ -32,7 +32,7 @@ class DummyPlugin extends AbstractPicoPlugin
      *
      * @var int
      */
-    public const API_VERSION = 3;
+    public const API_VERSION = 4;
 
     /**
      * This plugin is disabled by default