diff --git a/CHANGELOG.md b/CHANGELOG.md
index d5050e6606..ba782918db 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,55 @@
 
 ## 33.0.0
 
+**THIS UPDATE CONTAINS ADDING SUPPORT OF [Telegram Bots API 9.6](https://core.telegram.org/bots/api-changelog#april-3-2026)**
+
+**THIS UPDATE CONTAINS BREAKING CHANGES**
+
+* `Core`:
+    * **BREAKING CHANGE** `PollOption` reimplemented as a sealed interface hierarchy:
+      * `PollOption.Simple` replaces `SimplePollOption`
+      * `PollOption.LatelyAdded` sealed interface added with `AddedByUser` and `AddedByChat` variants
+      * `PollOption` now has `id: PollOptionPersistentId` field
+    * **BREAKING CHANGE** `QuizPoll.correctOptionId` replaced with `correctOptionIds: List<Int>` (multiple correct options support)
+    * **BREAKING CHANGE** `PollAnswer.Anonymous.voterChat` type changed from `ChannelChat` to `PreviewPublicChat`
+    * **BREAKING CHANGE** `SendPoll` and `SendRegularPoll` init checks no longer throw errors, warnings are logged instead
+    * **BREAKING CHANGE** `requestChannelReplyButton` for groups renamed to `requestGroupReplyButton`
+    * **BREAKING CHANGE** `openPeriodPollSecondsLimit` changed from `5 .. 600` to `5 .. 2628000`
+    * Added `PollOptionPersistentId` value class
+    * Added `PollOptionAdded` and `PollOptionDeleted` chat events
+    * Added `chosenPersistentIds` to `PollAnswer`
+    * Added `pollOptionId` support in `ReplyParameters` and `ReplyInfo` (`reply_to_poll_option_id`)
+    * Added `allowsRevoting`, `shuffleOptions`, `hideResultsUntilCloses` fields to `SendRegularPoll` and `SendQuizPoll`
+    * Added `allowAddingOptions` field to `SendRegularPoll`
+    * Added `description`, `descriptionParseMode`, `descriptionTextSources` fields to `SendQuizPoll` and `SendRegularPoll`
+    * Added `allowsMultipleAnswers` field to `SendQuizPoll`
+    * Added `openPeriod` and `closeDate` parameters to `SendPoll` function
+    * Added `ManagedBotCreated` and `ManagedBotUpdated` chat events
+    * Added `ManagedBotUpdate` update type and `UPDATE_MANAGED_BOT` constant
+    * Added `GetManagedBotToken` and `ReplaceManagedBotToken` requests
+    * Added `BotToken` value class
+    * Added `KeyboardButtonRequestManagedBot` and `RequestManagedBotKeyboardButton`
+    * Added `requestManagedBotReplyButton` shortcuts
+    * Added `SavePreparedKeyboardButton` request
+    * Added `PreparedKeyboardButton` and `PreparedKeyboardButtonId` types
+    * Added `canManageBots` field to `ExtendedBot`
+    * Added `managedBotNewBotUsername` constant
+* `API`:
+    * Added `savePreparedKeyboardButton` extensions
+    * Added `getManagedBotToken` and `replaceManagedBotToken` extensions
+* `BehaviourBuilder`:
+    * Added event triggers: `onManagedBotCreated`, `onManagedBotUpdated`, `onPollOptionAdded`, `onPollOptionDeleted`
+    * Added `onManagedBotUpdate` trigger for `ManagedBotUpdated` updates
+    * Added `waitManagedBotCreatedEvents`, `waitManagedBotUpdatedEvents`, `waitPollOptionAddedEvents`, `waitPollOptionDeletedEvents` expectations
+    * Added `waitManagedBotUpdated` expectation
+    * Added `ManagedBotUpdatedFilterByUser` and `ByUserManagedBotUpdatedMarkerFactory`
+* `Utils`:
+    * Added `managedBotCreationLink` functions for building managed bot creation links
+    * Added `requestManagedBotButton` extensions to `ReplyKeyboardRowBuilder`
+    * Regenerated class casts extensions
+* `WebApps`:
+    * Added `requestChat` method to `WebApp`
+
 ## 32.0.0
 
 **THIS UPDATE CONTAINS BREAKING CHANGES**
diff --git a/README.md b/README.md
index 5f658c3798..c275f01707 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# TelegramBotAPI [![Maven Central Version](https://img.shields.io/maven-central/v/dev.inmo/tgbotapi)](https://central.sonatype.com/artifact/dev.inmo/tgbotapi) [![Supported version](https://img.shields.io/badge/Telegram%20Bot%20API-9.5-blue)](https://core.telegram.org/bots/api-changelog#march-1-2026)
+# TelegramBotAPI [![Maven Central Version](https://img.shields.io/maven-central/v/dev.inmo/tgbotapi)](https://central.sonatype.com/artifact/dev.inmo/tgbotapi) [![Supported version](https://img.shields.io/badge/Telegram%20Bot%20API-9.6-blue)](https://core.telegram.org/bots/api-changelog#april-3-2026)
 
 |          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/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/send/polls/SendPoll.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/send/polls/SendPoll.kt
index 0325afdde8..29e2217934 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/send/polls/SendPoll.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/send/polls/SendPoll.kt
@@ -14,6 +14,7 @@ import dev.inmo.tgbotapi.types.message.abstracts.TelegramBotAPIMessageDeserializ
 import dev.inmo.tgbotapi.types.message.content.PollContent
 import dev.inmo.tgbotapi.types.message.textsources.TextSourcesList
 import dev.inmo.tgbotapi.types.polls.*
+import dev.inmo.tgbotapi.utils.DefaultKTgBotAPIKSLog
 import korlibs.time.millisecondsLong
 import korlibs.time.seconds
 import kotlinx.serialization.*
@@ -244,7 +245,9 @@ internal fun ScheduledCloseInfo.checkSendData() {
         is ApproximateScheduledCloseInfo -> openDuration.seconds
     }.toInt()
     if (span !in openPeriodPollSecondsLimit) {
-        error("Duration of autoclose for polls must be in range $openPeriodPollSecondsLimit, but was $span")
+        DefaultKTgBotAPIKSLog.w("checkSendData") {
+            "Duration of autoclose for polls must be in range $openPeriodPollSecondsLimit, but was $span"
+        }
     }
 }