Here i am getting strange issue because my android studio version & Gradle wrapper are updated with new version & still getting below issue:
Gradle sync failed: The android Gradle plugin version 2.3.0-beta1 is too old, please update to the latest version.
To override this check from the command line please set the ANDROID_DAILY_OVERRIDE environment variable to "e7cc61d747b236b3626248d02049407dfb0f8ae3".
Android studio : 2.3 Beta 3
classpath 'com.android.tools.build:gradle:2.3.0-beta1'
gradle-wrapper.properties
distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
Please drop your comments if anyone found this.