diff --git a/composer.json b/composer.json
index 777c2a4..ceaa705 100644
--- a/composer.json
+++ b/composer.json
@@ -17,8 +17,8 @@
     "require": {
         "php": ">=5.4",
         "guzzlehttp/guzzle": "~5.3|~6.0",
-        "guzzlehttp/guzzle-services": "0.5.0",
-        "guzzlehttp/command": "0.7.0"
+        "guzzlehttp/guzzle-services": "0.5.0|0.6.0",
+        "guzzlehttp/command": "0.7.0|0.7.1"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/resources/gift-card-adjustment.php b/src/resources/gift-card-adjustment.php
new file mode 100644
index 0000000..9f362b8
--- /dev/null
+++ b/src/resources/gift-card-adjustment.php
@@ -0,0 +1,107 @@
+<?php
+
+return array(
+
+    /*
+    |--------------------------------------------------------------------------
+    | Operations
+    |--------------------------------------------------------------------------
+    |
+    | This array of operations is translated into methods that complete these
+    | requests based on their configuration.
+    |
+    */
+
+    "operations" => array(
+
+        /**
+         *    getGiftCardAdjustments() method
+         *
+         *    reference: https://help.shopify.com/api/reference/gift_card_adjustment
+         */
+        "getGiftCardAdjustments" => array(
+            "httpMethod" => "GET",
+            "uri" => "/admin/gift_cards/{id}/adjustments.json",
+            "summary" => "Retrieve a list of all Gift Cards Adjustments for a Gift Card",
+            "responseModel" => "defaultJsonResponse",
+            "parameters" => array(
+                "id" => array(
+                    "type" => "number",
+                    "location" => "uri",
+                    "description" => "The ID of the Gift Card.",
+                    "required" => true
+                ),
+                "limit" => array(
+                    "type" => "integer",
+                    "location" => "query",
+                    "description" => "Amount of results (default: 50) (maximum: 250)"
+                ),
+                "page" => array(
+                    "type" => "integer",
+                    "location" => "query",
+                    "description" => "Page to show (default: 1)"
+                ),
+                "fields" => array(
+                    "type" => "string",
+                    "location" => "query",
+                    "description" => "comma-separated list of fields to include in the response"
+                )
+            )
+        ),
+
+        /**
+         *    createGiftCardAdjustment() method
+         *
+         *    reference: https://help.shopify.com/api/reference/gift_card_adjustment
+         */
+        "createGiftCardAdjustment" => array(
+            "httpMethod" => "POST",
+            "uri" => "/admin/gift_cards/{id}/adjustments.json",
+            "summary" => "Create a new Gift Card Adjustment.",
+            "responseModel" => "defaultJsonResponse",
+            "parameters" => array(
+                "id" => array(
+                    "type" => "number",
+                    "location" => "uri",
+                    "description" => "The ID of the Gift Card this adjustment should apply to.",
+                    "required" => true
+                ),
+                "adjustment" => array(
+                    "location" => "json",
+                    "parameters" => array(
+                        "amount" => array(
+                            "type" => "string",
+                            "location" => "json",
+                            "description" => "Amount to change the giftcard value by"
+                        ),
+                        "note" => array(
+                            "type" => "string",
+                            "location" => "json",
+                            "description" => "The description of the gift card adjustment."
+                        ),
+                        "processed_at" => array(
+                            "type" => "string",
+                            "location" => "json",
+                            "description" => "The date and time when this adjustment should have been actioned"
+                        )
+                    )
+                )
+            )
+        ),
+
+    ),
+
+    /*
+    |--------------------------------------------------------------------------
+    | Models
+    |--------------------------------------------------------------------------
+    |
+    | This array of models is specifications to returning the response
+    | from the operation methods.
+    |
+    */
+
+    "models" => array(
+
+    ),
+);
diff --git a/src/resources/inventory-level.php b/src/resources/inventory-level.php
new file mode 100644
index 0000000..7ea711e
--- /dev/null
+++ b/src/resources/inventory-level.php
@@ -0,0 +1,123 @@
+<?php
+
+return array(
+
+    /*
+    |--------------------------------------------------------------------------
+    | Operations
+    |--------------------------------------------------------------------------
+    |
+    | This array of operations is translated into methods that complete these
+    | requests based on their configuration.
+    |
+    */
+
+    "operations" => array(
+
+        /**
+         *    getGiftCardAdjustments() method
+         *
+         *    reference: https://help.shopify.com/api/reference/gift_card_adjustment
+         */
+        "getInventoryLevels" => array(
+            "httpMethod" => "GET",
+            "uri" => "/admin/inventory_levels.json",
+            "summary" => "Retrieve a list of all inventory levels for the given inventory item ids",
+            "responseModel" => "defaultJsonResponse",
+            "parameters" => array(
+                "inventory_item_ids" => array(
+                    "type" => "string",
+                    "location" => "query",
+                    "description" => "comma-separated list of inventory-item-ids"
+                ),
+                "page" => array(
+                    "type" => "integer",
+                    "location" => "query",
+                    "description" => "Page to show (default: 1)"
+                ),
+            )
+        ),
+
+        "adjustInventoryLevels" => array(
+            "httpMethod" => "POST",
+            "uri" => "/admin/inventory_levels/adjust.json",
+            "summary" => "Adjust an inventory level",
+            "responseModel" => "defaultJsonResponse",
+            "parameters" => array(
+                "location_id" => array(
+                    "type" => "string",
+                    "location" => "json",
+                    "description" => "the location id"
+                ),
+                "inventory_item_id" => array(
+                    "type" => "string",
+                    "location" => "json",
+                    "description" => "the inventory item id"
+                ),
+                "available_adjustment" => array(
+                    "type" => "string",
+                    "location" => "json",
+                    "description" => "the amount to change the inventory level by"
+                ),
+            )
+        ),
+
+        "setInventoryLevels" => array(
+            "httpMethod" => "POST",
+            "uri" => "/admin/inventory_levels/set.json",
+            "summary" => "set an inventory level",
+            "responseModel" => "defaultJsonResponse",
+            "parameters" => array(
+                "location_id" => array(
+                    "type" => "string",
+                    "location" => "json",
+                    "description" => "the location id"
+                ),
+                "inventory_item_id" => array(
+                    "type" => "string",
+                    "location" => "json",
+                    "description" => "the inventory item id"
+                ),
+                "available" => array(
+                    "type" => "string",
+                    "location" => "json",
+                    "description" => "the amount to set the inventory level to"
+                ),
+            )
+        ),
+
+        "connectInventoryLevels" => array(
+            "httpMethod" => "POST",
+            "uri" => "/admin/inventory_levels/connect.json",
+            "summary" => "Connect a location to an inventory level",
+            "responseModel" => "defaultJsonResponse",
+            "parameters" => array(
+                "location_id" => array(
+                    "type" => "string",
+                    "location" => "json",
+                    "description" => "the location id"
+                ),
+                "inventory_item_id" => array(
+                    "type" => "string",
+                    "location" => "json",
+                    "description" => "the inventory item id"
+                ),
+            )
+        ),
+
+    ),
+
+    /*
+    |--------------------------------------------------------------------------
+    | Models
+    |--------------------------------------------------------------------------
+    |
+    | This array of models is specifications to returning the response
+    | from the operation methods.
+    |
+    */
+
+    "models" => array(
+
+    ),
+);
diff --git a/src/resources/service-config.php b/src/resources/service-config.php
index dd76efe..899b243 100644
--- a/src/resources/service-config.php
+++ b/src/resources/service-config.php
@@ -53,6 +53,9 @@
         "fulfillment",
         "fulfillment-service",
         "gift-card",
+        "gift-card-adjustment",
+        /* "inventory-item", */
+        "inventory-level",
         "location",
         "metafield",
         "order",