diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7fc62c8f6d..b346bcb14f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 * `Core`:
     * `ContentMessage`, `CommonMessage`, `PossiblyMediaGroupMessage` and `PossiblySentViaBotCommonMessage` got `out`
       variance
+    * `UserId` now is `ChatId` instead of `IdChatIdentififer`
 
 ## 4.1.2
 
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/ChatIdentifier.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/ChatIdentifier.kt
index 0f81141a77..a3aea3d94c 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/ChatIdentifier.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/ChatIdentifier.kt
@@ -69,7 +69,7 @@ val UserId.userLink: String
 val User.link: String
     get() = id.userLink
 
-typealias UserId = IdChatIdentifier
+typealias UserId = ChatId
 
 fun Identifier.toChatId(): IdChatIdentifier = ChatId(this)
 fun Int.toChatId(): IdChatIdentifier = toLong().toChatId()