diff --git a/composer.json b/composer.json
index 1bb701d..f5b399c 100644
--- a/composer.json
+++ b/composer.json
@@ -8,7 +8,7 @@
     "license": "MIT",
     "autoload": {
         "psr-4": {
-            "Potter\\": "src/Potter/Contract/"
+            "Potter\\Startable\\": "src/Potter/Startable/"
         }
     },
     "authors": [
diff --git a/src/Potter/Startable/StartableInterface.php b/src/Potter/Startable/StartableInterface.php
new file mode 100644
index 0000000..02ff7c6
--- /dev/null
+++ b/src/Potter/Startable/StartableInterface.php
@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Potter\Startable;
+
+interface StartableInterface
+{
+    public function start(): void;
+}