diff --git a/CHANGES.md b/CHANGES.md
index 7b6cb5e6..d9f62161 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,14 @@
 # Change log for kotlinx.atomicfu
 
+# Version 0.21.0
+
+* Updated Kotlin to 1.8.20.
+* Updated Gradle to 7.3 (#300).
+* Updated kotlinx.metadata version to 0.6.0 (#281).
+* Removed JS Legacy configurations for KGP >= 1.9.0 (#296).
+* Fixed class duplication (from original and transformed directories) in Jar (#301).
+* Minimal supported KGP(1.7.0) and Gradle(7.0) versions are set since this release.
+
 # Version 0.20.2
 
 * Fix for unresolved `kotlinx-atomicfu-runtime` dependency error (https://youtrack.jetbrains.com/issue/KT-57235),
diff --git a/README.md b/README.md
index f9f01b9d..da6e5c91 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![Kotlin Beta](https://kotl.in/badges/beta.svg)](https://kotlinlang.org/docs/components-stability.html)
 [![JetBrains official project](https://jb.gg/badges/official.svg)](https://confluence.jetbrains.com/display/ALL/JetBrains+on+GitHub)
 [![GitHub license](https://img.shields.io/badge/license-Apache%20License%202.0-blue.svg?style=flat)](https://www.apache.org/licenses/LICENSE-2.0)
-[![Maven Central](https://img.shields.io/maven-central/v/org.jetbrains.kotlinx/atomicfu)](https://search.maven.org/artifact/org.jetbrains.kotlinx/atomicfu/0.20.2/pom)
+[![Maven Central](https://img.shields.io/maven-central/v/org.jetbrains.kotlinx/atomicfu)](https://search.maven.org/artifact/org.jetbrains.kotlinx/atomicfu/0.21.0/pom)
 
 >Note on Beta status: the plugin is in its active development phase and changes from release to release.
 >We do provide a compatibility of atomicfu-transformed artifacts between releases, but we do not provide 
@@ -119,7 +119,7 @@ buildscript {
     }
 
     dependencies {
-      classpath("org.jetbrains.kotlinx:atomicfu-gradle-plugin:0.20.2")
+      classpath("org.jetbrains.kotlinx:atomicfu-gradle-plugin:0.21.0")
     }
 }
 
@@ -136,7 +136,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'org.jetbrains.kotlinx:atomicfu-gradle-plugin:0.20.2'
+        classpath 'org.jetbrains.kotlinx:atomicfu-gradle-plugin:0.21.0'
     }
 }
   
@@ -154,7 +154,7 @@ Maven configuration is supported for JVM projects.
 
 ```xml
 <properties>
-     <atomicfu.version>0.20.2</atomicfu.version>
+     <atomicfu.version>0.21.0</atomicfu.version>
 </properties> 
 ```
 
@@ -298,7 +298,7 @@ To set configuration options you should create `atomicfu` section in a `build.gr
 like this:
 ```groovy
 atomicfu {
-  dependenciesVersion = '0.20.2'
+  dependenciesVersion = '0.21.0'
 }
 ```
 
@@ -320,7 +320,7 @@ To turn off transformation for Kotlin/JS set option `transformJs` to `false`.
 Here are all available configuration options (with their defaults):
 ```groovy
 atomicfu {
-  dependenciesVersion = '0.20.2' // set to null to turn-off auto dependencies
+  dependenciesVersion = '0.21.0' // set to null to turn-off auto dependencies
   transformJvm = true // set to false to turn off JVM transformation
   jvmVariant = "FU" // JVM transformation variant: FU,VH, or BOTH
   transformJs = true // set to false to turn off JVM transformation
diff --git a/gradle.properties b/gradle.properties
index a6c4dbc8..f2525559 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,7 +2,7 @@
 # Copyright 2016-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
 #
 
-version=0.20.2-SNAPSHOT
+version=0.21.0-SNAPSHOT
 group=org.jetbrains.kotlinx
 
 kotlin_version=1.8.20