This Android SDK requires Android Developer Toolkit version 23.0.0 or above

I get the following error when I start my Eclipse.

enter image description here

And when I try to update from Help > Install New Software... using the eclipse update link https://dl-ssl.google.com/eclipse/plugin/4.2

It gives me following error:

Cannot complete the install because of a conflicting dependency.
Software being installed: Android Development Tools 23.0.1.1256982 (com.android.ide.eclipse.adt.feature.feature.group 23.0.1.1256982)
Software currently installed: Android Development Tools 22.6.3.v201404151837-1123206 (com.android.ide.eclipse.adt.feature.group 22.6.3.v201404151837-1123206)
Only one of the following can be installed at once: 
ADT XML Overlay 23.0.1.1256982 (overlay.com.android.ide.eclipse.adt.overlay 23.0.1.1256982)
ADT XML Overlay 22.6.3.v201404151837-1123206 (overlay.com.android.ide.eclipse.adt.overlay 22.6.3.v201404151837-1123206)
Cannot satisfy dependency:
From: Android Development Tools 23.0.1.1256982 (com.android.ide.eclipse.adt.feature.feature.group 23.0.1.1256982)
To: overlay.com.android.ide.eclipse.adt.overlay [23.0.1.1256982]
Cannot satisfy dependency:
From: Android Development Tools 22.6.3.v201404151837-1123206 (com.android.ide.eclipse.adt.feature.group 22.6.3.v201404151837-1123206)
To: overlay.com.android.ide.eclipse.adt.overlay [22.6.3.v201404151837-1123206]

What should I do now?

Solution

The best solution to this is to download a new ADT from http://developer.android.com/sdk/index.html