diff --git a/src/model/generated/_marketplaceListingFilled.ts b/src/model/generated/_marketplaceListingFilled.ts
index d495ebf3..8ec098cc 100644
--- a/src/model/generated/_marketplaceListingFilled.ts
+++ b/src/model/generated/_marketplaceListingFilled.ts
@@ -10,7 +10,7 @@ export class MarketplaceListingFilled {
     private _amountFilled!: bigint
     private _amountRemaining!: bigint
     private _protocolFee!: bigint
-    private _price!: bigint
+    private _price!: bigint | undefined | null
     private _royalty!: bigint
 
     constructor(props?: Partial<Omit<MarketplaceListingFilled, 'toJSON'>>, json?: any) {
@@ -21,7 +21,7 @@ export class MarketplaceListingFilled {
             this._amountFilled = marshal.bigint.fromJSON(json.amountFilled)
             this._amountRemaining = marshal.bigint.fromJSON(json.amountRemaining)
             this._protocolFee = marshal.bigint.fromJSON(json.protocolFee)
-            this._price = marshal.bigint.fromJSON(json.price)
+            this._price = json.price == null ? undefined : marshal.bigint.fromJSON(json.price)
             this._royalty = marshal.bigint.fromJSON(json.royalty)
         }
     }
@@ -71,12 +71,11 @@ export class MarketplaceListingFilled {
         this._protocolFee = value
     }
 
-    get price(): bigint {
-        assert(this._price != null, 'uninitialized access')
+    get price(): bigint | undefined | null {
         return this._price
     }
 
-    set price(value: bigint) {
+    set price(value: bigint | undefined | null) {
         this._price = value
     }
 
@@ -97,7 +96,7 @@ export class MarketplaceListingFilled {
             amountFilled: marshal.bigint.toJSON(this.amountFilled),
             amountRemaining: marshal.bigint.toJSON(this.amountRemaining),
             protocolFee: marshal.bigint.toJSON(this.protocolFee),
-            price: marshal.bigint.toJSON(this.price),
+            price: this.price == null ? undefined : marshal.bigint.toJSON(this.price),
             royalty: marshal.bigint.toJSON(this.royalty),
         }
     }