diff --git a/CHANGES.md b/CHANGES.md
index 024d1d0807..fb60da3017 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,9 @@
 # Change log for kotlinx.coroutines
 
+## Version 1.6.3
+
+* Updated atomicfu version to 0.17.3 (#3321), fixing the projects using this library with JS IR failing to build (#3305).
+
 ## Version 1.6.2
 
 * Fixed a bug with `ThreadLocalElement` not being correctly updated when the most outer `suspend` function was called directly without `kotlinx.coroutines` (#2930).
diff --git a/gradle.properties b/gradle.properties
index 7357e56575..63fdf28c62 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,7 +3,7 @@
 #
 
 # Kotlin
-version=1.6.2-SNAPSHOT
+version=1.6.3-SNAPSHOT
 group=org.jetbrains.kotlinx
 kotlin_version=1.6.21
 
diff --git a/integration-testing/gradle.properties b/integration-testing/gradle.properties
index d89f46c1f6..1f334cafea 100644
--- a/integration-testing/gradle.properties
+++ b/integration-testing/gradle.properties
@@ -1,4 +1,4 @@
 kotlin_version=1.6.21
-coroutines_version=1.6.2-SNAPSHOT
+coroutines_version=1.6.3-SNAPSHOT
 
 kotlin.code.style=official
diff --git a/kotlinx-coroutines-debug/README.md b/kotlinx-coroutines-debug/README.md
index ab8704fb28..2243df3020 100644
--- a/kotlinx-coroutines-debug/README.md
+++ b/kotlinx-coroutines-debug/README.md
@@ -61,7 +61,7 @@ stacktraces will be dumped to the console.
 ### Using as JVM agent
 
 Debug module can also be used as a standalone JVM agent to enable debug probes on the application startup.
-You can run your application with an additional argument: `-javaagent:kotlinx-coroutines-debug-1.6.2.jar`.
+You can run your application with an additional argument: `-javaagent:kotlinx-coroutines-debug-1.6.3.jar`.
 Additionally, on Linux and Mac OS X you can use `kill -5 $pid` command in order to force your application to print all alive coroutines.
 When used as Java agent, `"kotlinx.coroutines.debug.enable.creation.stack.trace"` system property can be used to control 
 [DebugProbes.enableCreationStackTraces] along with agent startup.
diff --git a/kotlinx-coroutines-test/README.md b/kotlinx-coroutines-test/README.md
index 403a89a4d3..4ac41e22a0 100644
--- a/kotlinx-coroutines-test/README.md
+++ b/kotlinx-coroutines-test/README.md
@@ -26,7 +26,7 @@ Provided [TestDispatcher] implementations:
 Add `kotlinx-coroutines-test` to your project test dependencies:
 ```
 dependencies {
-    testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.2'
+    testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.3'
 }
 ```
 
diff --git a/ui/coroutines-guide-ui.md b/ui/coroutines-guide-ui.md
index a9ebc1f940..ddc39bdd64 100644
--- a/ui/coroutines-guide-ui.md
+++ b/ui/coroutines-guide-ui.md
@@ -110,7 +110,7 @@ Add dependencies on `kotlinx-coroutines-android` module to the `dependencies { .
 `app/build.gradle` file:
 
 ```groovy
-implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.2"
+implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.3"
 ```
 
 You can clone [kotlinx.coroutines](https://github.com/Kotlin/kotlinx.coroutines) project from GitHub onto your