diff --git a/src/asquare.py b/src/asquare.py
index fb0bb5e..0e59e38 100644
--- a/src/asquare.py
+++ b/src/asquare.py
@@ -266,6 +266,25 @@ async def update_itm(item_id: str, lego_set: dict, item_data: dict = None):
             print(f"[@DEBUG] Fresh variation version: {variation_version}")
 
             # Build upsert body
+            variation_obj = {
+                "type": "ITEM_VARIATION",
+                "id": variation_id if variation_id else "#TEMP_VARIATION_ID",
+                "item_variation_data": {
+                    "item_id": item_id,
+                    "name": "Regular",
+                    "pricing_type": "FIXED_PRICING",
+                    "price_money": {
+                        "amount": price_in_cents,
+                        "currency": "USD",
+                    },
+                    "sku": set_upc if set_upc else None,
+                },
+            }
+
+            # Include variation version if it exists (required for updates)
+            if variation_version is not None:
+                variation_obj["version"] = variation_version
+
             upsert_body = {
                 "idempotency_key": str(uuid.uuid4()),
                 "object": {
@@ -275,35 +294,14 @@ async def update_itm(item_id: str, lego_set: dict, item_data: dict = None):
                     "item_data": {
                         "name": pw_name,
                         "description": f"{set_name} - {set_theme}",
-                        "variations": [
-                            {
-                                "type": "ITEM_VARIATION",
-                                "id": (
-                                    variation_id
-                                    if variation_id
-                                    else "#TEMP_VARIATION_ID"
-                                ),
-                                "item_variation_data": {
-                                    "item_id": item_id,
-                                    "name": "Regular",
-                                    "pricing_type": "FIXED_PRICING",
-                                    "price_money": {
-                                        "amount": price_in_cents,
-                                        "currency": "USD",
-                                    },
-                                    "sku": set_upc if set_upc else None,
-                                },
-                            }
-                        ],
+                        "variations": [variation_obj],
                     },
                 },
             }
 
             # Remove None values
             if not set_upc:
-                del upsert_body["object"]["item_data"]["variations"][0][
-                    "item_variation_data"
-                ]["sku"]
+                del variation_obj["item_variation_data"]["sku"]
 
             print(f"[@DEBUG] Upserting item {item_id} with name: {pw_name}")