diff --git a/CHANGELOG.md b/CHANGELOG.md
index dacd803187..8eb65d99d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## 31.0.1
 
+* `Core`:
+    * In `StarTransaction` property `nanostarAmount` become nullable
+
 ## 31.0.0
 
 **THIS UPDATE CONTAINS ADDING SUPPORT OF [Telegram Bots API 9.3](https://core.telegram.org/bots/api-changelog#december-31-2025)**
diff --git a/tgbotapi.core/api/tgbotapi.core.api b/tgbotapi.core/api/tgbotapi.core.api
index 179141d395..9a526572b9 100644
--- a/tgbotapi.core/api/tgbotapi.core.api
+++ b/tgbotapi.core/api/tgbotapi.core.api
@@ -30721,7 +30721,7 @@ public abstract interface class dev/inmo/tgbotapi/types/payments/stars/StarTrans
 	public static final field Companion Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Companion;
 	public abstract fun getDate ()Ldev/inmo/tgbotapi/types/TelegramDate;
 	public abstract fun getId-xINTbLo ()Ljava/lang/String;
-	public abstract fun getNanostarAmount ()I
+	public abstract fun getNanostarAmount ()Ljava/lang/Integer;
 	public abstract fun getPartner ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
 	public abstract fun getReceiver ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
 	public abstract fun getSource ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
@@ -30742,20 +30742,20 @@ public final class dev/inmo/tgbotapi/types/payments/stars/StarTransaction$Defaul
 
 public final class dev/inmo/tgbotapi/types/payments/stars/StarTransaction$Incoming : dev/inmo/tgbotapi/types/payments/stars/StarTransaction {
 	public static final field Companion Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Incoming$Companion;
-	public synthetic fun <init> (Ljava/lang/String;JILdev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Lkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public synthetic fun <init> (Ljava/lang/String;JLjava/lang/Integer;Ldev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Lkotlin/jvm/internal/DefaultConstructorMarker;)V
 	public final fun component1-xINTbLo ()Ljava/lang/String;
 	public final fun component2 ()J
-	public final fun component3 ()I
+	public final fun component3 ()Ljava/lang/Integer;
 	public final fun component4 ()Ldev/inmo/tgbotapi/types/TelegramDate;
 	public final fun component5 ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
-	public final fun copy-UiV6LeQ (Ljava/lang/String;JILdev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Incoming;
-	public static synthetic fun copy-UiV6LeQ$default (Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Incoming;Ljava/lang/String;JILdev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;ILjava/lang/Object;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Incoming;
+	public final fun copy-UiV6LeQ (Ljava/lang/String;JLjava/lang/Integer;Ldev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Incoming;
+	public static synthetic fun copy-UiV6LeQ$default (Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Incoming;Ljava/lang/String;JLjava/lang/Integer;Ldev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;ILjava/lang/Object;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Incoming;
 	public fun equals (Ljava/lang/Object;)Z
 	public fun getAdaptedMajorityTotalAmount ()D
 	public fun getAmount ()J
 	public fun getDate ()Ldev/inmo/tgbotapi/types/TelegramDate;
 	public fun getId-xINTbLo ()Ljava/lang/String;
-	public fun getNanostarAmount ()I
+	public fun getNanostarAmount ()Ljava/lang/Integer;
 	public fun getPartner ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
 	public fun getReceiver ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
 	public fun getSource ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
@@ -30769,20 +30769,20 @@ public final class dev/inmo/tgbotapi/types/payments/stars/StarTransaction$Incomi
 
 public final class dev/inmo/tgbotapi/types/payments/stars/StarTransaction$Outgoing : dev/inmo/tgbotapi/types/payments/stars/StarTransaction {
 	public static final field Companion Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Outgoing$Companion;
-	public synthetic fun <init> (Ljava/lang/String;JILdev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Lkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public synthetic fun <init> (Ljava/lang/String;JLjava/lang/Integer;Ldev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Lkotlin/jvm/internal/DefaultConstructorMarker;)V
 	public final fun component1-xINTbLo ()Ljava/lang/String;
 	public final fun component2 ()J
-	public final fun component3 ()I
+	public final fun component3 ()Ljava/lang/Integer;
 	public final fun component4 ()Ldev/inmo/tgbotapi/types/TelegramDate;
 	public final fun component5 ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
-	public final fun copy-UiV6LeQ (Ljava/lang/String;JILdev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Outgoing;
-	public static synthetic fun copy-UiV6LeQ$default (Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Outgoing;Ljava/lang/String;JILdev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;ILjava/lang/Object;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Outgoing;
+	public final fun copy-UiV6LeQ (Ljava/lang/String;JLjava/lang/Integer;Ldev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Outgoing;
+	public static synthetic fun copy-UiV6LeQ$default (Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Outgoing;Ljava/lang/String;JLjava/lang/Integer;Ldev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;ILjava/lang/Object;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Outgoing;
 	public fun equals (Ljava/lang/Object;)Z
 	public fun getAdaptedMajorityTotalAmount ()D
 	public fun getAmount ()J
 	public fun getDate ()Ldev/inmo/tgbotapi/types/TelegramDate;
 	public fun getId-xINTbLo ()Ljava/lang/String;
-	public fun getNanostarAmount ()I
+	public fun getNanostarAmount ()Ljava/lang/Integer;
 	public fun getPartner ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
 	public fun getReceiver ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
 	public fun getSource ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
@@ -30796,22 +30796,22 @@ public final class dev/inmo/tgbotapi/types/payments/stars/StarTransaction$Outgoi
 
 public final class dev/inmo/tgbotapi/types/payments/stars/StarTransaction$Unknown : dev/inmo/tgbotapi/types/payments/stars/StarTransaction {
 	public static final field Companion Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Unknown$Companion;
-	public synthetic fun <init> (Ljava/lang/String;JILdev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Lkotlinx/serialization/json/JsonElement;Lkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public synthetic fun <init> (Ljava/lang/String;JLjava/lang/Integer;Ldev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Lkotlinx/serialization/json/JsonElement;Lkotlin/jvm/internal/DefaultConstructorMarker;)V
 	public final fun component1-xINTbLo ()Ljava/lang/String;
 	public final fun component2 ()J
-	public final fun component3 ()I
+	public final fun component3 ()Ljava/lang/Integer;
 	public final fun component4 ()Ldev/inmo/tgbotapi/types/TelegramDate;
 	public final fun component5 ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
 	public final fun component6 ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
 	public final fun component7 ()Lkotlinx/serialization/json/JsonElement;
-	public final fun copy-58pZDbM (Ljava/lang/String;JILdev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Lkotlinx/serialization/json/JsonElement;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Unknown;
-	public static synthetic fun copy-58pZDbM$default (Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Unknown;Ljava/lang/String;JILdev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Lkotlinx/serialization/json/JsonElement;ILjava/lang/Object;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Unknown;
+	public final fun copy-58pZDbM (Ljava/lang/String;JLjava/lang/Integer;Ldev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Lkotlinx/serialization/json/JsonElement;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Unknown;
+	public static synthetic fun copy-58pZDbM$default (Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Unknown;Ljava/lang/String;JLjava/lang/Integer;Ldev/inmo/tgbotapi/types/TelegramDate;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;Lkotlinx/serialization/json/JsonElement;ILjava/lang/Object;)Ldev/inmo/tgbotapi/types/payments/stars/StarTransaction$Unknown;
 	public fun equals (Ljava/lang/Object;)Z
 	public fun getAdaptedMajorityTotalAmount ()D
 	public fun getAmount ()J
 	public fun getDate ()Ldev/inmo/tgbotapi/types/TelegramDate;
 	public fun getId-xINTbLo ()Ljava/lang/String;
-	public fun getNanostarAmount ()I
+	public fun getNanostarAmount ()Ljava/lang/Integer;
 	public fun getPartner ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
 	public final fun getRaw ()Lkotlinx/serialization/json/JsonElement;
 	public fun getReceiver ()Ldev/inmo/tgbotapi/types/payments/stars/TransactionPartner;
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/payments/stars/StarTransaction.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/payments/stars/StarTransaction.kt
index 9dc7173a39..1905a857e1 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/payments/stars/StarTransaction.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/payments/stars/StarTransaction.kt
@@ -19,7 +19,7 @@ import kotlinx.serialization.json.JsonElement
 @ClassCastsIncluded
 sealed interface StarTransaction : Amounted {
     val id: StarTransactionId
-    val nanostarAmount: Int
+    val nanostarAmount: Int?
     val date: TelegramDate
     val partner: TransactionPartner
     val source: TransactionPartner?
@@ -32,7 +32,7 @@ sealed interface StarTransaction : Amounted {
         @SerialName(amountField)
         override val amount: Long,
         @SerialName(nanostarAmountField)
-        override val nanostarAmount: Int,
+        override val nanostarAmount: Int?,
         @SerialName(dateField)
         override val date: TelegramDate,
         @SerialName(sourceField)
@@ -52,7 +52,7 @@ sealed interface StarTransaction : Amounted {
         @SerialName(amountField)
         override val amount: Long,
         @SerialName(nanostarAmountField)
-        override val nanostarAmount: Int,
+        override val nanostarAmount: Int?,
         @SerialName(dateField)
         override val date: TelegramDate,
         @SerialName(receiverField)
@@ -71,7 +71,7 @@ sealed interface StarTransaction : Amounted {
         override val id: StarTransactionId,
         override val amount: Long,
         @SerialName(nanostarAmountField)
-        override val nanostarAmount: Int,
+        override val nanostarAmount: Int?,
         override val date: TelegramDate,
         override val source: TransactionPartner?,
         override val receiver: TransactionPartner?,
@@ -86,9 +86,9 @@ sealed interface StarTransaction : Amounted {
         private data class Surrogate(
             val id: StarTransactionId,
             val amount: Long,
-            @SerialName(nanostarAmountField)
-            val nanostarAmount: Int,
             val date: TelegramDate,
+            @SerialName(nanostarAmountField)
+            val nanostarAmount: Int? = null,
             val source: TransactionPartner? = null,
             val receiver: TransactionPartner? = null,
         )