diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8e59d57fa6..305d25c06c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # TelegramBotAPI changelog
 
+## 20.0.1
+
+* `Core`:
+  * Fix of logger propagation (fix of [#860](https://github.com/InsanusMokrassar/ktgbotapi/issues/860))
+  * Add opportunity to modify keyboards (fix of [#761](https://github.com/InsanusMokrassar/ktgbotapi/issues/761))
+  * Fields of `OrderInfo` became nullable (fix of [#917](https://github.com/InsanusMokrassar/ktgbotapi/issues/917))
+  * Add default `toString` to `ChatType` (fix of [#919](https://github.com/InsanusMokrassar/ktgbotapi/issues/919))
+  * Fix of method in `CreateInvoiceLink` (merging of [#920](https://github.com/InsanusMokrassar/ktgbotapi/issues/920), made by [byteduck-exploit](https://github.com/byteduck-exploit))
+
 ## 20.0.0
 
 **THIS UPDATE CONTAINS SUPPORT OF [BOTS API 7.11](https://core.telegram.org/bots/api-changelog#october-31-2024)**
diff --git a/gradle.properties b/gradle.properties
index bafc5ec3eb..11147ac396 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -6,4 +6,4 @@ kotlin.incremental=true
 kotlin.incremental.js=true
 
 library_group=dev.inmo
-library_version=20.0.0
+library_version=20.0.1
diff --git a/tgbotapi.core/api/tgbotapi.core.api b/tgbotapi.core/api/tgbotapi.core.api
index ecd9912a8a..16aaa02d21 100644
--- a/tgbotapi.core/api/tgbotapi.core.api
+++ b/tgbotapi.core/api/tgbotapi.core.api
@@ -13558,6 +13558,8 @@ public final class dev/inmo/tgbotapi/types/buttons/InlineKeyboardMarkup : dev/in
 	public fun equals (Ljava/lang/Object;)Z
 	public final fun getKeyboard ()Ljava/util/List;
 	public fun hashCode ()I
+	public final fun minus (Ldev/inmo/tgbotapi/types/buttons/InlineKeyboardMarkup;)Ldev/inmo/tgbotapi/types/buttons/InlineKeyboardMarkup;
+	public final fun plus (Ldev/inmo/tgbotapi/types/buttons/InlineKeyboardMarkup;)Ldev/inmo/tgbotapi/types/buttons/InlineKeyboardMarkup;
 	public fun toString ()Ljava/lang/String;
 }
 
@@ -13872,6 +13874,8 @@ public final class dev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup : dev/inm
 	public static final field Companion Ldev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup$Companion;
 	public fun <init> (Ljava/util/List;Ljava/lang/Boolean;Ljava/lang/Boolean;Ljava/lang/String;Ljava/lang/Boolean;Ljava/lang/Boolean;)V
 	public synthetic fun <init> (Ljava/util/List;Ljava/lang/Boolean;Ljava/lang/Boolean;Ljava/lang/String;Ljava/lang/Boolean;Ljava/lang/Boolean;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public final fun add (Ldev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup;Ljava/lang/String;)Ldev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup;
+	public static synthetic fun add$default (Ldev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup;Ldev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup;Ljava/lang/String;ILjava/lang/Object;)Ldev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup;
 	public final fun component1 ()Ljava/util/List;
 	public final fun component2 ()Ljava/lang/Boolean;
 	public final fun component3 ()Ljava/lang/Boolean;
@@ -13888,6 +13892,8 @@ public final class dev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup : dev/inm
 	public final fun getResizeKeyboard ()Ljava/lang/Boolean;
 	public final fun getSelective ()Ljava/lang/Boolean;
 	public fun hashCode ()I
+	public final fun minus (Ldev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup;)Ldev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup;
+	public final fun plus (Ldev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup;)Ldev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup;
 	public fun toString ()Ljava/lang/String;
 }
 
@@ -14752,6 +14758,7 @@ public final class dev/inmo/tgbotapi/types/chat/ChatSerializersKt {
 public abstract class dev/inmo/tgbotapi/types/chat/ChatType {
 	public static final field Companion Ldev/inmo/tgbotapi/types/chat/ChatType$Companion;
 	public abstract fun getStringified ()Ljava/lang/String;
+	public fun toString ()Ljava/lang/String;
 }
 
 public final class dev/inmo/tgbotapi/types/chat/ChatType$Channel : dev/inmo/tgbotapi/types/chat/ChatType {
@@ -27066,7 +27073,10 @@ public class dev/inmo/tgbotapi/utils/MatrixBuilder {
 	public fun <init> ()V
 	public final fun add (Ljava/util/List;)Z
 	public final fun getMatrix ()Ljava/util/List;
+	public final fun modifyRow (ILkotlin/jvm/functions/Function1;)V
+	public final fun modifyRow (Ljava/util/List;Lkotlin/jvm/functions/Function1;)Z
 	public final fun plus (Ljava/util/List;)Z
+	public final fun remove (I)Ljava/util/List;
 	public final fun unaryPlus (Ljava/lang/Object;)Z
 }
 
@@ -27149,6 +27159,9 @@ public class dev/inmo/tgbotapi/utils/RowBuilder {
 	public fun <init> ()V
 	public final fun add (Ljava/lang/Object;)Z
 	public final fun getRow ()Ljava/util/List;
+	public final fun remove (I)Ljava/lang/Object;
+	public final fun replace (ILjava/lang/Object;)V
+	public final fun replace (Ljava/lang/Object;Ljava/lang/Object;)Z
 	public final fun unaryPlus (Ljava/lang/Object;)Z
 }
 
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/KtorRequestsExecutorFactories.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/KtorRequestsExecutorFactories.kt
index 768d99fcb6..c3623e8e76 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/KtorRequestsExecutorFactories.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/KtorRequestsExecutorFactories.kt
@@ -34,14 +34,14 @@ class KtorRequestsExecutorBuilder(
     }
 
     fun build() = KtorRequestsExecutor(
-        telegramAPIUrlsKeeper,
-        client,
-        callsFactories,
-        excludeDefaultFactories,
-        requestsLimiter,
-        jsonFormatter,
-        pipelineStepsHolder,
-        logger
+        telegramAPIUrlsKeeper = telegramAPIUrlsKeeper,
+        client = client,
+        callsFactories = callsFactories,
+        excludeDefaultFactories = excludeDefaultFactories,
+        requestsLimiter = requestsLimiter,
+        jsonFormatter = jsonFormatter,
+        pipelineStepsHolder = pipelineStepsHolder,
+        logger = logger
     )
 }
 
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/base/DefaultKtorRequestsExecutor.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/base/DefaultKtorRequestsExecutor.kt
index bd29dc2ee6..e08f2c3807 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/base/DefaultKtorRequestsExecutor.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/ktor/base/DefaultKtorRequestsExecutor.kt
@@ -32,10 +32,10 @@ class DefaultKtorRequestsExecutor internal constructor(
 ) : BaseRequestsExecutor(telegramAPIUrlsKeeper) {
     private val callsFactories: List<KtorCallFactory> = callsFactories.run {
         if (!excludeDefaultFactories) {
-            logger.v { "Installing default factories" }
-            this + createTelegramBotDefaultKtorCallRequestsFactories(logger)
+            this@DefaultKtorRequestsExecutor.logger.v { "Installing default factories" }
+            this + createTelegramBotDefaultKtorCallRequestsFactories(this@DefaultKtorRequestsExecutor.logger)
         } else {
-            logger.v { "Default factories will not be installed" }
+            this@DefaultKtorRequestsExecutor.logger.v { "Default factories will not be installed" }
             this
         }
     }
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/send/payments/CreateInvoiceLink.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/send/payments/CreateInvoiceLink.kt
index 598d9a277b..f1114a47f4 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/send/payments/CreateInvoiceLink.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/send/payments/CreateInvoiceLink.kt
@@ -54,7 +54,7 @@ data class CreateInvoiceLink(
     @SerialName(priceDependOnShipAddressField)
     override val priceDependOnShipAddress: Boolean = false
 ) : CommonSendInvoiceData, SimpleRequest<String> {
-    override fun method(): String = "sendInvoice"
+    override fun method(): String = "createInvoiceLink"
     override val resultDeserializer: DeserializationStrategy<String>
         get() = String.serializer()
     override val requestSerializer: SerializationStrategy<*>
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/InlineKeyboardMarkup.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/InlineKeyboardMarkup.kt
index cd17bb80df..6b1e535101 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/InlineKeyboardMarkup.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/InlineKeyboardMarkup.kt
@@ -25,4 +25,23 @@ data class InlineKeyboardMarkup(
             }
         }
     }
+
+    operator fun plus(other: InlineKeyboardMarkup): InlineKeyboardMarkup {
+        return InlineKeyboardMarkup(
+            keyboard + other.keyboard
+        )
+    }
+
+    operator fun minus(other: InlineKeyboardMarkup): InlineKeyboardMarkup {
+        val otherButtons = other.keyboard.flatten()
+        return InlineKeyboardMarkup(
+            keyboard.mapNotNull { row ->
+                row.filter { button ->
+                    button !in otherButtons
+                }.takeIf {
+                    it.isNotEmpty()
+                }
+            }
+        )
+    }
 }
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup.kt
index 8ffecc9d3f..658792e00f 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/ReplyKeyboardMarkup.kt
@@ -22,4 +22,32 @@ data class ReplyKeyboardMarkup(
             error("Field $inputFieldPlaceholderField length must be in $inputFieldPlaceholderLimit, but was ${inputFieldPlaceholder.length}")
         }
     }
+
+    fun add(other: ReplyKeyboardMarkup, placeholderDelimiter: String = "\n"): ReplyKeyboardMarkup {
+        return ReplyKeyboardMarkup(
+            keyboard = keyboard + other.keyboard,
+            resizeKeyboard = resizeKeyboard ?.or(other.resizeKeyboard ?: false) ?: other.resizeKeyboard,
+            oneTimeKeyboard = oneTimeKeyboard ?.or(other.oneTimeKeyboard ?: false) ?: other.oneTimeKeyboard,
+            inputFieldPlaceholder = inputFieldPlaceholder ?.plus(other.inputFieldPlaceholder ?.let { placeholderDelimiter + it } ?: "") ?: other.inputFieldPlaceholder,
+            selective = selective ?.or(other.selective ?: false) ?: other.selective,
+            persistent = persistent ?.or(other.persistent ?: false) ?: other.persistent,
+        )
+    }
+
+    operator fun plus(other: ReplyKeyboardMarkup): ReplyKeyboardMarkup {
+        return add(other)
+    }
+
+    operator fun minus(other: ReplyKeyboardMarkup): ReplyKeyboardMarkup {
+        val otherButtons = other.keyboard.flatten()
+        return copy(
+            keyboard.mapNotNull { row ->
+                row.filter { button ->
+                    button !in otherButtons
+                }.takeIf {
+                    it.isNotEmpty()
+                }
+            }
+        )
+    }
 }
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/ChatSerializers.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/ChatSerializers.kt
index 0a655096e8..d7f6b23e16 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/ChatSerializers.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/ChatSerializers.kt
@@ -29,6 +29,10 @@ sealed class ChatType {
     object Channel : ChatType() { override val stringified = "channel" }
     @Serializable(ChatTypeSerializer::class)
     class Unknown(override val stringified: String) : ChatType()
+
+    override fun toString(): String {
+        return stringified
+    }
 }
 val String.asChatType
     get() = when (this) {
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/payments/OrderInfo.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/payments/OrderInfo.kt
index 274449cc45..b7a03d3edb 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/payments/OrderInfo.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/payments/OrderInfo.kt
@@ -4,14 +4,21 @@ import dev.inmo.tgbotapi.types.*
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
+/**
+ * All the field of this class are nullable due to specific of [OrderInfo](https://core.telegram.org/bots/api#orderinfo)
+ * from official bots api
+ *
+ * @see dev.inmo.tgbotapi.abstracts.CommonSendInvoiceData
+ * @see dev.inmo.tgbotapi.requests.send.payments.SendInvoice
+ */
 @Serializable
 data class OrderInfo(
     @SerialName(nameField)
-    val name: String,
+    val name: String?,
     @SerialName(phoneNumberField)
-    val phoneNumber: String,
+    val phoneNumber: String?,
     @SerialName(emailField)
-    val email: String,
+    val email: String?,
     @SerialName(shippingAddressField)
-    val shippingAddress: ShippingAddress
+    val shippingAddress: ShippingAddress?
 )
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/Matrix.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/Matrix.kt
index c14ae77d0e..7a3a4b56e3 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/Matrix.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/Matrix.kt
@@ -1,5 +1,6 @@
 package dev.inmo.tgbotapi.utils
 
+import dev.inmo.micro_utils.common.withReplaced
 import dev.inmo.tgbotapi.types.buttons.Matrix
 
 /**
@@ -67,6 +68,18 @@ open class RowBuilder<T> {
 
     fun add(t: T) = mutRow.add(t)
     operator fun T.unaryPlus() = add(this)
+
+    fun replace(i: Int, new: T) {
+        mutRow[i] = new
+    }
+    fun replace(old: T, new: T): Boolean {
+        val i = mutRow.indexOf(old).takeIf { it > -1 } ?: return false
+        replace(i, new)
+        return mutRow[i] == new
+    }
+    fun remove(i: Int): T {
+        return mutRow.removeAt(i)
+    }
 }
 
 open class MatrixBuilder<T> {
@@ -77,4 +90,19 @@ open class MatrixBuilder<T> {
     fun add(t: List<T>) = mutMatrix.add(t)
     operator fun plus(t: List<T>) = add(t)
     operator fun T.unaryPlus() = add(listOf(this))
+
+    fun modifyRow(i: Int, block: RowBuilder<T>.() -> Unit) {
+        val exists = matrix[i]
+        val rowBuilder = RowBuilder<T>()
+        exists.forEach { rowBuilder.add(it) }
+        mutMatrix[i] = rowBuilder.apply(block).row
+    }
+    fun modifyRow(row: List<T>, block: RowBuilder<T>.() -> Unit): Boolean {
+        val i = mutMatrix.indexOf(row).takeIf { it > -1 } ?: return false
+        modifyRow(i, block)
+        return true
+    }
+    fun remove(i: Int): List<T> {
+        return mutMatrix.removeAt(i)
+    }
 }
diff --git a/tgbotapi.utils/api/tgbotapi.utils.api b/tgbotapi.utils/api/tgbotapi.utils.api
index 42b6bfd647..ae493b7ddd 100644
--- a/tgbotapi.utils/api/tgbotapi.utils.api
+++ b/tgbotapi.utils/api/tgbotapi.utils.api
@@ -3390,6 +3390,7 @@ public final class dev/inmo/tgbotapi/extensions/utils/types/buttons/InlineKeyboa
 	public static synthetic fun inlineQueryInChosenChatButton$default (Ldev/inmo/tgbotapi/utils/RowBuilder;Ljava/lang/String;Ljava/lang/String;ZZZZILjava/lang/Object;)Z
 	public static final fun inlineQueryInCurrentChatButton (Ldev/inmo/tgbotapi/utils/RowBuilder;Ljava/lang/String;Ljava/lang/String;)Z
 	public static final fun loginButton (Ldev/inmo/tgbotapi/utils/RowBuilder;Ljava/lang/String;Ldev/inmo/tgbotapi/types/LoginURL;)Z
+	public static final fun modified (Ldev/inmo/tgbotapi/types/buttons/InlineKeyboardMarkup;Lkotlin/jvm/functions/Function1;)Ldev/inmo/tgbotapi/types/buttons/InlineKeyboardMarkup;
 	public static final fun payButton (Ldev/inmo/tgbotapi/utils/RowBuilder;Ljava/lang/String;)Z
 	public static final fun urlButton (Ldev/inmo/tgbotapi/utils/RowBuilder;Ljava/lang/String;Ljava/lang/String;)Z
 	public static final fun webAppButton (Ldev/inmo/tgbotapi/utils/RowBuilder;Ljava/lang/String;Ldev/inmo/tgbotapi/types/webapps/WebAppInfo;)Z
diff --git a/tgbotapi.utils/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/utils/types/buttons/InlineKeyboardBuilder.kt b/tgbotapi.utils/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/utils/types/buttons/InlineKeyboardBuilder.kt
index f3a90dee90..152078de6f 100644
--- a/tgbotapi.utils/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/utils/types/buttons/InlineKeyboardBuilder.kt
+++ b/tgbotapi.utils/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/utils/types/buttons/InlineKeyboardBuilder.kt
@@ -49,6 +49,19 @@ inline fun flatInlineKeyboard(
     block: InlineKeyboardRowBuilder.() -> Unit
 ) = inlineKeyboard { row<InlineKeyboardButton>(block) }
 
+/**
+ * Factory-function for [InlineKeyboardBuilder]. It will [apply] [block] to internally created [InlineKeyboardMarkup]
+ * and [InlineKeyboardBuilder.build] [InlineKeyboardMarkup] then
+ *
+ * @see InlineKeyboardBuilder.row
+ */
+inline fun InlineKeyboardMarkup.modified(
+    block: InlineKeyboardBuilder.() -> Unit
+) = InlineKeyboardBuilder().apply {
+    keyboard.forEach { add(it) }
+    block()
+}.build()
+
 
 /**
  * Creates and put [PayInlineKeyboardButton]