diff --git a/definitions/07-Hiro-Inventory.json b/definitions/07-Hiro-Inventory.json
index aa5989c..68cb33a 100644
--- a/definitions/07-Hiro-Inventory.json
+++ b/definitions/07-Hiro-Inventory.json
@@ -14,7 +14,8 @@
         },
         "numeric_properties": {
           "prop2": 123
-        }
+        },
+        "keep_zero": true
       },
       "item2": {
         "name": "name2",
diff --git a/inventory.go b/inventory.go
index 9c9754a..5e4bd14 100644
--- a/inventory.go
+++ b/inventory.go
@@ -36,6 +36,7 @@ type InventoryConfigItem struct {
 	StringProperties  map[string]string    `json:"string_properties,omitempty"`
 	NumericProperties map[string]float64   `json:"numeric_properties,omitempty"`
 	Disabled          bool                 `json:"disabled,omitempty"`
+	KeepZero          bool                 `json:"keep_zero,omitempty"`
 }
 
 // The InventorySystem provides a gameplay system which can manage a player's inventory.
diff --git a/schemas/07-Hiro-Inventory.json b/schemas/07-Hiro-Inventory.json
index 83de8dc..09833de 100644
--- a/schemas/07-Hiro-Inventory.json
+++ b/schemas/07-Hiro-Inventory.json
@@ -30,6 +30,9 @@
               },
               "type": "array"
             },
+            "keep_zero": {
+              "type": "boolean"
+            },
             "max_count": {
               "minimum": 0,
               "type": "number"