UNMIS wound up its operations on 9 July 2011 with the completion of the interim period agreed on by the Government of Sudan and Sudan People's Liberation Movement in the Comprehensive Peace Agreement (CPA), signed on 9 January 2005.
 
The mission ended its six years of mandated operations the same day South Sudan declared independence, following a CPA-provided referendum on 9 January 2011 that voted overwhelmingly in favour of secession.