How to update gradle in android studio?

I installed Android Studio 0.1.9. Today I got and update to version 0.2 and of course I updated. After the installation I restarted Android Studio but now I get this message:

Project is using an old version of the Android Gradle plug-in. The
minimum supported version is 0.5.0. Please update the version of the
dependency 'com.android.tools.build:gradle'

How do I do that? I can't find any update tools for the gradle plugin in android studio.

Answer

File→Settings→Build, Execution, Deployment→Build Tools→Gradle→Use default Gradle wrapper (recommended)

File→Project Structure→Project

The following table shows which version of Gradle is compatible with specific version of Android plugin for Gradle:

Latest stable versions you can use with Android Studio 3.5.1 (October 2019):

Android Plugin version: 3.5.1
Gradle version: 5.4.1

---