diff --git a/lib/sly/interface.rb b/lib/sly/interface.rb
index d7197f6..accb79f 100644
--- a/lib/sly/interface.rb
+++ b/lib/sly/interface.rb
@@ -57,8 +57,9 @@ def update_item(id, attributes)
 
     item_hash = item.to_flat_hash
 
-    #can't change type of item
+    #can't change type or product of item
     item_hash.delete(:type)
+    item_hash.delete(:product)
 
     self.connector.update_item(id, item_hash)
   end
diff --git a/spec/sly/interface_spec.rb b/spec/sly/interface_spec.rb
index 1e2cff4..a748c5e 100644
--- a/spec/sly/interface_spec.rb
+++ b/spec/sly/interface_spec.rb
@@ -128,14 +128,15 @@
       })
     end
 
-    it "does not try to update the type" do
+    it "does not try to update the type or product" do
       expect(api.connector).to receive(:update_item).with(id, {
         number: id,
         score: "S",
         tags: "tag1,tag2"
       })
       api.update_item(id, {
-        type: "story"
+        type: "story",
+        product: Sly::Product.new
       })
     end