diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index 65a48a4..79a894e 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -15,7 +15,7 @@
  */
 
 plugins {
-    kotlin("jvm") version "1.9.10"
+    kotlin("jvm") version "1.9.20-Beta2"
 }
 
 repositories {
diff --git a/buildSrc/src/main/kotlin/Versions.kt b/buildSrc/src/main/kotlin/Versions.kt
index 3f0caef..134eba7 100644
--- a/buildSrc/src/main/kotlin/Versions.kt
+++ b/buildSrc/src/main/kotlin/Versions.kt
@@ -31,7 +31,7 @@ object Versions {
     const val coroutines = "1.7.3"
     const val junit = "4.13.2"
     const val robolectric = "4.10.3"
-    const val serializationPlugin = "1.9.10"
+    const val serializationPlugin = "1.9.20-Beta2"
     const val serializationRuntime = "1.6.0"
     const val turbine = "1.0.0"
 }
diff --git a/sample/build.gradle.kts b/sample/build.gradle.kts
index bc44150..4b62708 100644
--- a/sample/build.gradle.kts
+++ b/sample/build.gradle.kts
@@ -15,8 +15,8 @@
  */
 
 plugins {
-    kotlin("multiplatform") version "1.9.10" apply false
-    kotlin("android") version "1.9.10" apply false
+    kotlin("multiplatform") version "1.9.20-Beta2" apply false
+    kotlin("android") version "1.9.20-Beta2" apply false
     id("com.android.library") version "8.1.2" apply false
     id("com.android.application") version "8.1.2" apply false
 }