diff --git a/InventoryInStorePickupAdminUi/Block/Adminhtml/Order/View/ReadyForPickup.php b/InventoryInStorePickupAdminUi/Block/Adminhtml/Order/View/ReadyForPickup.php
index 6e680dfc83ad..80d20a828148 100644
--- a/InventoryInStorePickupAdminUi/Block/Adminhtml/Order/View/ReadyForPickup.php
+++ b/InventoryInStorePickupAdminUi/Block/Adminhtml/Order/View/ReadyForPickup.php
@@ -15,6 +15,7 @@
 
 /**
  * TODO: is it possible to replace with UI Component?
+ * @api
  * @see https://github.com/magento-engcom/msi/issues/2161
  *
  * Render 'Notify Order is Ready for Pickup' button on order view page
diff --git a/InventoryInStorePickupApi/composer.json b/InventoryInStorePickupApi/composer.json
index 36ddfc89dd99..ae8815eda36b 100644
--- a/InventoryInStorePickupApi/composer.json
+++ b/InventoryInStorePickupApi/composer.json
@@ -4,6 +4,7 @@
     "require": {
         "php": "~7.1.3||~7.2.0",
         "magento/framework": "*",
+        "magento/module-inventory-api": "*",
         "magento/module-inventory-distance-based-source-selection-api": "*"
     },
     "type": "magento2-module",