diff --git a/core/ShopState.lua b/core/ShopState.lua
index 55a6f60..2351d23 100644
--- a/core/ShopState.lua
+++ b/core/ShopState.lua
@@ -179,7 +179,11 @@
     end
     local available = amountPurchased
     for _, productPurchased in ipairs(productsPurchased) do
-        local productSources, productAvailable = ScanInventory.findProductItems(self.products, productPurchased.product, productPurchased.quantity * amountPurchased)
+        local onInventoryRefresh
+        if self.eventHooks and self.eventHooks.onInventoryRefresh then
+            onInventoryRefresh = self.eventHooks.onInventoryRefresh
+        end
+        local productSources, productAvailable = ScanInventory.findProductItems(self.products, productPurchased.product, productPurchased.quantity * amountPurchased, onInventoryRefresh)
         available = math.min(available, math.floor(productAvailable / productPurchased.quantity))
         productPurchased.sources = productSources
         if available == 0 then
diff --git a/core/inventory/ScanInventory.lua b/core/inventory/ScanInventory.lua
index 6cf2339..a5a12c0 100644
--- a/core/inventory/ScanInventory.lua
+++ b/core/inventory/ScanInventory.lua
@@ -243,13 +243,13 @@
     return sources, quantity - remaining
 end
 
-local function findProductItems(products, product, quantity)
+local function findProductItems(products, product, quantity, onInventoryRefresh)
     local sources = nil
     local amount = 0
     local items = getItemCache()
     sources, amount = findProductItemsFrom(product, quantity, items, true)
     if amount == 0 then
-        updateProductInventory(products)
+        updateProductInventory(products, onInventoryRefresh)
         items = getItemCache()
         sources, amount = findProductItemsFrom(product, quantity, items)
     end