# Android SDK changelog

> Track versioned releases and updates for the Unity Ads Android SDK.

## Version 4.20.0 - released 2026-08-14

* Improved ad load reliability and overall performance.
* Fixed a crash on Android 8 and reduced Application Not Responding errors (ANRs).
* Added support for Android Gradle Plugin 9 with R8 minification.

> **Note:**
>
> If you’re upgrading or plan to upgrade to Android Gradle Plugin 9 / AGP 9 with `isMinifyEnabled = true`, install the Unity Ads SDK 4.20.0.
>
> If you’re using a Unity Ads SDK version earlier than 4.20.0 with Android Gradle Plugin 9 with `isMinifyEnabled = true`, you must [add the required keep rules to your own ProGuard configuration](/ads-android/4.20.0/sdk-integration/requirements.md#android-gradle-plugin-versions), otherwise Unity's diagnostic and operative events are silently dropped under R8.

## Version 4.19.0 - released 2026-06-23

* Upgraded Kotlin to 2.1.x.
* Fixed bugs and added stability improvements.

> **Important:**
>
> Direct integration publishers: Refer to the Unity Ads 4.19.0 Android API reference for [Java and Kotlin](/ads-android/4.20.0/sdk-integration/api/android-api.md) deprecated APIs.