diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee162ce3c4..7ac6e0f1f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,9 +2,23 @@
 
 ## 17.0.0
 
+**THIS UPDATE CONTAINS SUPPORT OF BOTS API 7.9**
+
+* Add support of subscriptions links handling
+* Add support of info about sender chat. **It is important, that for channels will be actual `senderChat` instead of
+`from` field due to `User` type of the last one**. You also may use extensions `Message.sender_chat` or `Any.withSenderChatMessageOrNull`
+to access sender chat
+* Add `Reaction.Paid`
+
+Additional changes:
+
+* `Core`:
+    * Add top level interfaces `OptionallyWithUser` and `OptionallyFromUser`. Old `WithUser` and `FromUser` interfaces
+    extending them with following overrides of `user` and `from` fields
 * `API`:
     * Change order of delay and sending action in [SendActionDSL](tgbotapi.api/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/api/send/SendActionDSL.kt)
-    (thanks to [DRSchlaubi](https://github.com/DRSchlaubi), [PR #833](https://github.com/InsanusMokrassar/ktgbotapi/pull/883))
+    (thanks to [DRSchlaubi](https://github.com/DRSchlaubi), [PR #833](https://github.com/InsanusMokrassar/ktgbotapi/pull/883)).
+    Besides, there has been changed way to create parallel sending of action and it must not lead to memory leaks anymore
 
 ## 16.0.0
 
diff --git a/README.md b/README.md
index 5ee6e4837c..711fce10ff 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# TelegramBotAPI [![Maven Central](https://maven-badges.herokuapp.com/maven-central/dev.inmo/tgbotapi/badge.svg)](https://maven-badges.herokuapp.com/maven-central/dev.inmo/tgbotapi) [![Supported version](https://img.shields.io/badge/Telegram%20Bot%20API-7.8-blue)](https://core.telegram.org/bots/api-changelog#july-31-2024)
+# TelegramBotAPI [![Maven Central](https://maven-badges.herokuapp.com/maven-central/dev.inmo/tgbotapi/badge.svg)](https://maven-badges.herokuapp.com/maven-central/dev.inmo/tgbotapi) [![Supported version](https://img.shields.io/badge/Telegram%20Bot%20API-7.9-blue)](https://core.telegram.org/bots/api-changelog#august-14-2024)
 
 |          Docs          |                                   [![KDocs](https://img.shields.io/static/v1?label=Dokka&message=KDocs&color=blue&logo=kotlin)](https://tgbotapi.inmo.dev/index.html) [![Mini tutorial](https://img.shields.io/static/v1?label=Mk&message=Docs&color=blue&logo=mkdocs)](https://docs.inmo.dev/tgbotapi/index.html)                                    |
 |:----------------------:|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|
diff --git a/tgbotapi.core/api/tgbotapi.core.api b/tgbotapi.core/api/tgbotapi.core.api
index fcb683fe34..7f0653eafb 100644
--- a/tgbotapi.core/api/tgbotapi.core.api
+++ b/tgbotapi.core/api/tgbotapi.core.api
@@ -25224,14 +25224,12 @@ public final class dev/inmo/tgbotapi/types/reactions/Reaction$Emoji$Companion {
 }
 
 public final class dev/inmo/tgbotapi/types/reactions/Reaction$Paid : dev/inmo/tgbotapi/types/reactions/Reaction {
-	public static final field Companion Ldev/inmo/tgbotapi/types/reactions/Reaction$Paid$Companion;
-	public static final field type Ljava/lang/String;
-	public fun <init> ()V
+	public static final field INSTANCE Ldev/inmo/tgbotapi/types/reactions/Reaction$Paid;
+	public fun equals (Ljava/lang/Object;)Z
 	public fun getType ()Ljava/lang/String;
-}
-
-public final class dev/inmo/tgbotapi/types/reactions/Reaction$Paid$Companion {
+	public fun hashCode ()I
 	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+	public fun toString ()Ljava/lang/String;
 }
 
 public final class dev/inmo/tgbotapi/types/reactions/Reaction$Unknown : dev/inmo/tgbotapi/types/reactions/Reaction {
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/reactions/Reaction.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/reactions/Reaction.kt
index 3ceb370dd5..c1057d8447 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/reactions/Reaction.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/reactions/Reaction.kt
@@ -44,12 +44,9 @@ sealed interface Reaction {
     }
 
     @Serializable(Reaction.Companion::class)
-    class Paid : Reaction {
+    data object Paid : Reaction {
         override val type: String
-            get() = Companion.type
-        companion object {
-            const val type: String = "paid"
-        }
+            get() = "paid"
     }
 
     @Serializable(Reaction.Companion::class)
@@ -82,7 +79,7 @@ sealed interface Reaction {
             return when {
                 surrogate.emoji != null -> Emoji(surrogate.emoji)
                 surrogate.customEmojiId != null -> CustomEmoji(surrogate.customEmojiId)
-                surrogate.type == Paid.type -> Paid()
+                surrogate.type == Paid.type -> Paid
                 else -> Unknown(surrogate.type, json)
             }
         }