diff --git a/src/main/kotlin/com/ecwid/apiclient/v3/dto/order/result/FetchedOrder.kt b/src/main/kotlin/com/ecwid/apiclient/v3/dto/order/result/FetchedOrder.kt
index 65f7bd4d..f2a3f794 100644
--- a/src/main/kotlin/com/ecwid/apiclient/v3/dto/order/result/FetchedOrder.kt
+++ b/src/main/kotlin/com/ecwid/apiclient/v3/dto/order/result/FetchedOrder.kt
@@ -348,6 +348,7 @@ data class FetchedOrder(
 		val isShippingLimit: Boolean? = null,
 		val scheduled: Boolean? = null,
 		val scheduledTimePrecisionType: ScheduledTimePrecisionType? = null,
+		val timeSlotLengthInMinutes: Int? = null,
 	)
 
 	data class HandlingFee(
diff --git a/src/test/kotlin/com/ecwid/apiclient/v3/rule/NonUpdatablePropertyRules.kt b/src/test/kotlin/com/ecwid/apiclient/v3/rule/NonUpdatablePropertyRules.kt
index ff0e84f9..17d43c1a 100644
--- a/src/test/kotlin/com/ecwid/apiclient/v3/rule/NonUpdatablePropertyRules.kt
+++ b/src/test/kotlin/com/ecwid/apiclient/v3/rule/NonUpdatablePropertyRules.kt
@@ -226,6 +226,7 @@ val nonUpdatablePropertyRules: List<NonUpdatablePropertyRule<*, *>> = listOf(
 	ReadOnly(FetchedOrder.ShippingOption::isShippingLimit),
 	ReadOnly(FetchedOrder.ShippingOption::scheduled),
 	ReadOnly(FetchedOrder.ShippingOption::scheduledTimePrecisionType),
+	ReadOnly(FetchedOrder.ShippingOption::timeSlotLengthInMinutes),
 	ReadOnly(FetchedOrder.HandlingFee::valueWithoutTax),
 	ReadOnly(FetchedOrder.Surcharge::totalWithoutTax),
 	Ignored(FetchedOrder::refundedAmount),
diff --git a/src/test/kotlin/com/ecwid/apiclient/v3/rule/nullablepropertyrules/FetchedOrderRules.kt b/src/test/kotlin/com/ecwid/apiclient/v3/rule/nullablepropertyrules/FetchedOrderRules.kt
index 5dbde3a3..4e9898e4 100644
--- a/src/test/kotlin/com/ecwid/apiclient/v3/rule/nullablepropertyrules/FetchedOrderRules.kt
+++ b/src/test/kotlin/com/ecwid/apiclient/v3/rule/nullablepropertyrules/FetchedOrderRules.kt
@@ -187,6 +187,7 @@ val fetchedOrderNullablePropertyRules: List<NullablePropertyRule<*, *>> = listOf
 	AllowNullable(FetchedOrder.ShippingOption::localizedLabel),
 	AllowNullable(FetchedOrder.ShippingOption::scheduled),
 	AllowNullable(FetchedOrder.ShippingOption::scheduledTimePrecisionType),
+	AllowNullable(FetchedOrder.ShippingOption::timeSlotLengthInMinutes),
 	AllowNullable(FetchedOrder.ShippingServiceInfo::carrier),
 	AllowNullable(FetchedOrder.ShippingServiceInfo::carrierName),
 	AllowNullable(FetchedOrder.ShippingServiceInfo::carrierServiceCode),