diff --git a/ci/templates/desktop-template/gradle.properties b/ci/templates/desktop-template/gradle.properties
index b4076219d1..1c2bb1eb6e 100644
--- a/ci/templates/desktop-template/gradle.properties
+++ b/ci/templates/desktop-template/gradle.properties
@@ -1,4 +1,4 @@
 org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
 kotlin.code.style=official
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 compose.version=1.9.0
diff --git a/ci/templates/html-library-template/gradle.properties b/ci/templates/html-library-template/gradle.properties
index b4076219d1..1c2bb1eb6e 100644
--- a/ci/templates/html-library-template/gradle.properties
+++ b/ci/templates/html-library-template/gradle.properties
@@ -1,4 +1,4 @@
 org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
 kotlin.code.style=official
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 compose.version=1.9.0
diff --git a/ci/templates/multiplatform-template/gradle.properties b/ci/templates/multiplatform-template/gradle.properties
index 8345e57d0f..43ae6ac95e 100644
--- a/ci/templates/multiplatform-template/gradle.properties
+++ b/ci/templates/multiplatform-template/gradle.properties
@@ -2,6 +2,6 @@ org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
 android.useAndroidX=true
 android.enableJetifier=true
 kotlin.code.style=official
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 agp.version=8.9.0
 compose.version=1.9.0
diff --git a/components/gradle.properties b/components/gradle.properties
index ea952daa28..0d81258b2e 100644
--- a/components/gradle.properties
+++ b/components/gradle.properties
@@ -7,7 +7,7 @@ org.gradle.configuration-cache=true
 android.useAndroidX=true
 
 #Versions
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 agp.version=8.9.0
 compose.version=1.9.0
 deploy.version=9999.0.0-SNAPSHOT
diff --git a/examples/chat/gradle.properties b/examples/chat/gradle.properties
index 9825b2dab0..1378c70204 100644
--- a/examples/chat/gradle.properties
+++ b/examples/chat/gradle.properties
@@ -10,6 +10,6 @@ kotlin.native.useEmbeddableCompilerJar=true
 kotlin.mpp.androidSourceSetLayoutVersion=2
 # Enable kotlin/native experimental memory model
 kotlin.native.binary.memoryModel=experimental
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 agp.version=8.9.0
 compose.version=1.9.1
diff --git a/examples/codeviewer/gradle.properties b/examples/codeviewer/gradle.properties
index 9825b2dab0..1378c70204 100644
--- a/examples/codeviewer/gradle.properties
+++ b/examples/codeviewer/gradle.properties
@@ -10,6 +10,6 @@ kotlin.native.useEmbeddableCompilerJar=true
 kotlin.mpp.androidSourceSetLayoutVersion=2
 # Enable kotlin/native experimental memory model
 kotlin.native.binary.memoryModel=experimental
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 agp.version=8.9.0
 compose.version=1.9.1
diff --git a/examples/graphics-2d/gradle.properties b/examples/graphics-2d/gradle.properties
index 9825b2dab0..1378c70204 100644
--- a/examples/graphics-2d/gradle.properties
+++ b/examples/graphics-2d/gradle.properties
@@ -10,6 +10,6 @@ kotlin.native.useEmbeddableCompilerJar=true
 kotlin.mpp.androidSourceSetLayoutVersion=2
 # Enable kotlin/native experimental memory model
 kotlin.native.binary.memoryModel=experimental
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 agp.version=8.9.0
 compose.version=1.9.1
diff --git a/examples/html/compose-bird/gradle.properties b/examples/html/compose-bird/gradle.properties
index cddf54f730..f18ccbe6f9 100644
--- a/examples/html/compose-bird/gradle.properties
+++ b/examples/html/compose-bird/gradle.properties
@@ -1,5 +1,5 @@
 kotlin.code.style=official
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 compose.version=1.9.1
 org.gradle.configuration-cache=true
 org.gradle.caching=true
diff --git a/examples/html/compose-in-js/gradle.properties b/examples/html/compose-in-js/gradle.properties
index 292a22f32b..321ee6fa55 100644
--- a/examples/html/compose-in-js/gradle.properties
+++ b/examples/html/compose-in-js/gradle.properties
@@ -1,6 +1,6 @@
 kotlin.code.style=official
 kotlin.js.webpack.major.version=4
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 compose.version=1.9.1
 org.gradle.configuration-cache=true
 org.gradle.caching=true
diff --git a/examples/html/landing/gradle.properties b/examples/html/landing/gradle.properties
index cddf54f730..f18ccbe6f9 100644
--- a/examples/html/landing/gradle.properties
+++ b/examples/html/landing/gradle.properties
@@ -1,5 +1,5 @@
 kotlin.code.style=official
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 compose.version=1.9.1
 org.gradle.configuration-cache=true
 org.gradle.caching=true
diff --git a/examples/html/with-react/gradle.properties b/examples/html/with-react/gradle.properties
index cddf54f730..f18ccbe6f9 100644
--- a/examples/html/with-react/gradle.properties
+++ b/examples/html/with-react/gradle.properties
@@ -1,5 +1,5 @@
 kotlin.code.style=official
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 compose.version=1.9.1
 org.gradle.configuration-cache=true
 org.gradle.caching=true
diff --git a/examples/imageviewer/gradle.properties b/examples/imageviewer/gradle.properties
index 61c48c6178..55c09b3e89 100644
--- a/examples/imageviewer/gradle.properties
+++ b/examples/imageviewer/gradle.properties
@@ -7,6 +7,6 @@ org.gradle.configuration-cache=true
 org.gradle.caching=true
 org.jetbrains.compose.experimental.jscanvas.enabled=true
 org.jetbrains.compose.experimental.macos.enabled=true
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 agp.version=8.9.0
 compose.version=1.9.1
diff --git a/examples/interop/ios-compose-in-swiftui/gradle.properties b/examples/interop/ios-compose-in-swiftui/gradle.properties
index 922b9f8e4b..743cd1e4a2 100644
--- a/examples/interop/ios-compose-in-swiftui/gradle.properties
+++ b/examples/interop/ios-compose-in-swiftui/gradle.properties
@@ -1,5 +1,5 @@
 kotlin.code.style=official
 xcodeproj=./iosApp
 org.gradle.jvmargs=-Xmx3g
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 compose.version=1.9.1
diff --git a/examples/interop/ios-compose-in-uikit/gradle.properties b/examples/interop/ios-compose-in-uikit/gradle.properties
index c90e9dd52f..db269ae225 100644
--- a/examples/interop/ios-compose-in-uikit/gradle.properties
+++ b/examples/interop/ios-compose-in-uikit/gradle.properties
@@ -3,5 +3,5 @@ xcodeproj=./iosApp
 org.gradle.jvmargs=-Xmx3g
 # Enable kotlin/native experimental memory model
 kotlin.native.binary.memoryModel=experimental
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 compose.version=1.9.1
diff --git a/examples/interop/ios-swiftui-in-compose/gradle.properties b/examples/interop/ios-swiftui-in-compose/gradle.properties
index c90e9dd52f..db269ae225 100644
--- a/examples/interop/ios-swiftui-in-compose/gradle.properties
+++ b/examples/interop/ios-swiftui-in-compose/gradle.properties
@@ -3,5 +3,5 @@ xcodeproj=./iosApp
 org.gradle.jvmargs=-Xmx3g
 # Enable kotlin/native experimental memory model
 kotlin.native.binary.memoryModel=experimental
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 compose.version=1.9.1
diff --git a/examples/interop/ios-uikit-in-compose/gradle.properties b/examples/interop/ios-uikit-in-compose/gradle.properties
index c90e9dd52f..db269ae225 100644
--- a/examples/interop/ios-uikit-in-compose/gradle.properties
+++ b/examples/interop/ios-uikit-in-compose/gradle.properties
@@ -3,5 +3,5 @@ xcodeproj=./iosApp
 org.gradle.jvmargs=-Xmx3g
 # Enable kotlin/native experimental memory model
 kotlin.native.binary.memoryModel=experimental
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 compose.version=1.9.1
diff --git a/examples/issues/gradle.properties b/examples/issues/gradle.properties
index 4b7bf7085f..a1921e4381 100644
--- a/examples/issues/gradle.properties
+++ b/examples/issues/gradle.properties
@@ -19,6 +19,6 @@ kotlin.code.style=official
 android.useAndroidX=true
 # Automatically convert third-party libraries to use AndroidX
 android.enableJetifier=true
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 agp.version=8.9.0
 compose.version=1.9.1
diff --git a/examples/jetsnack/gradle.properties b/examples/jetsnack/gradle.properties
index f4169fc81d..361b6d14dd 100644
--- a/examples/jetsnack/gradle.properties
+++ b/examples/jetsnack/gradle.properties
@@ -2,5 +2,5 @@ org.gradle.jvmargs=-Xmx8g
 kotlin.code.style=official
 android.useAndroidX=true
 agp.version=8.9.0
-kotlin.version=2.2.20
+kotlin.version=2.2.21
 compose.version=1.9.1
diff --git a/gradle-plugins/gradle.properties b/gradle-plugins/gradle.properties
index 63ea59c815..5127865d0e 100644
--- a/gradle-plugins/gradle.properties
+++ b/gradle-plugins/gradle.properties
@@ -11,7 +11,7 @@ dev.junit.parallel=false
 compose.version=1.10.0-alpha02
 compose.material3.version=1.9.0-beta03
 # The latest version of Kotlin compatible with compose.tests.compiler.version. Used only in tests/CI.
-compose.tests.kotlin.version=2.2.20
+compose.tests.kotlin.version=2.2.21
 # __SUPPORTED_GRADLE_VERSIONS__
 # Don't forget to edit versions in .github/workflows/gradle-plugin.yml as well
 # and Publish.Subtasks.buildTypes.gradle.GradlePluginTestKt#gradleVersions in the TC config
diff --git a/html/buildSrc/gradle.properties b/html/buildSrc/gradle.properties
index 3a0de6635e..b535eea64d 100644
--- a/html/buildSrc/gradle.properties
+++ b/html/buildSrc/gradle.properties
@@ -1 +1 @@
-kotlin.version=2.2.20
+kotlin.version=2.2.21
diff --git a/tutorials/HTML/Getting_Started/README.md b/tutorials/HTML/Getting_Started/README.md
index 5114d87a0c..e331be8a39 100644
--- a/tutorials/HTML/Getting_Started/README.md
+++ b/tutorials/HTML/Getting_Started/README.md
@@ -36,7 +36,7 @@ pluginManagement {
 ``` kotlin
 // Add compose gradle plugin
 plugins {
-    kotlin("multiplatform") version "2.2.20"
+    kotlin("multiplatform") version "2.2.21"
     id("org.jetbrains.compose") version "1.9.0"
 }