After updating to android studio 2.3 I got this error message. I know it's just a hint as the app run normally but it's really strange. All com.android.support libraries must use the exact same version specification (mixing versions can lead to runtime crashes). Found versions 25.1.1, 24.0.0. Examples include com.android.support:animated-vector-drawable:25.1.1 and com.android.support:mediarouter-v