Update README.md

README.md

@@ -7,14 +7,13 @@ Available as a [webpage](https://flutter-animations-cheat-sheet.codemagic.app/#/
 The content of the page is [searchable](https://flutter-animations-cheat-sheet.codemagic.app/#/content).
 
 # Building
-Last tested version of Flutter that works with this repo is `1.23.0-18.1.pre`:
+Last tested version of Flutter that works with this repo is `2.1.0-12.2.pre`:
   * **Important**: You cannot be on beta/stable channel to run flutter desktop - check out how [to switch to a specific version](https://tomek-polanski.medium.com/running-flutter-desktop-on-stable-channel-c2ee38157e7b).
 
 ## Building for Web
-Upgrade flutter to minimum `1.23.0-18.1.pre`, enable web compilation and run:
+Upgrade flutter to minimum `2.1.0-12.2.pre`, enable web compilation and run:
 ```
-flutter version 1.23.0-18.1.pre
-flutter config --enable-web
+flutter version 2.1.0-12.2.pre
 flutter run -d chrome -v
 ```