diff --git a/build-android-start/build.gradle.kts b/build-android-start/build.gradle.kts
index 47a545be..e0f5efc1 100644
--- a/build-android-start/build.gradle.kts
+++ b/build-android-start/build.gradle.kts
@@ -2,7 +2,7 @@
 plugins {
     id("com.android.application") version "8.1.4" apply false
     id("com.android.library") version "8.1.4" apply false
-    id("org.jetbrains.kotlin.android") version "1.9.20" apply false
+    id("org.jetbrains.kotlin.android") version "1.9.21" apply false
     id("com.google.gms.google-services") version "4.4.0" apply false
 }
 
diff --git a/build-android/build.gradle.kts b/build-android/build.gradle.kts
index 47a545be..e0f5efc1 100644
--- a/build-android/build.gradle.kts
+++ b/build-android/build.gradle.kts
@@ -2,7 +2,7 @@
 plugins {
     id("com.android.application") version "8.1.4" apply false
     id("com.android.library") version "8.1.4" apply false
-    id("org.jetbrains.kotlin.android") version "1.9.20" apply false
+    id("org.jetbrains.kotlin.android") version "1.9.21" apply false
     id("com.google.gms.google-services") version "4.4.0" apply false
 }
 
diff --git a/build.gradle.kts b/build.gradle.kts
index fa2741bd..5c790f91 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -3,7 +3,7 @@ import com.github.benmanes.gradle.versions.updates.DependencyUpdatesTask
 plugins {
     id("com.android.application") version "8.1.4" apply false
     id("com.android.library") version "8.1.4" apply false
-    id("org.jetbrains.kotlin.android") version "1.9.20" apply false
+    id("org.jetbrains.kotlin.android") version "1.9.21" apply false
     id("com.google.gms.google-services") version "4.4.0" apply false
     id("com.github.ben-manes.versions") version "0.50.0" apply true
 }