diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8c3a2062..12b34188 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,9 +5,9 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
-## [Unreleased]
+## [1.8.21] - 2023-11-26
 ### Changed
-- Update to [TDLib v1.8.13](https://github.com/tdlib/td/tree/c95598e5e1493881d31211c1329bdbe4630f6136).
+- Update to [TDLib v1.8.21](https://github.com/tdlib/td/tree/07c1d53a6d3cb1fad58d2822e55eef6d57363581).
 
 ## [1.8.12] - 2023-03-18
 ### Changed
diff --git a/Directory.Build.props b/Directory.Build.props
index 2c015e72..e3c1bbdf 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,5 +1,5 @@
 <Project>
     <PropertyGroup>
-        <Version>1.8.12</Version>
+        <Version>1.8.21</Version>
     </PropertyGroup>
 </Project>