The decision to extend Koevermans' contract was taken at a meeting of the AIFF Executive Committee here on the recommendations of the Technical Committee.
Koevermans, who took charge in July last year for a two-year stint, will be given charge of the national team till the end of 2014 Asian Games (September 19 to October 4) in Incheon, South Korea.
The Executive Committee also approved another recommendation of the AIFF Technical Committee, headed by former captain Bhaichung Bhutia, to extend the contract of national team Technical Director Rob Baan by one year.
"Koevermans' contract was extended till October 2014. Besides the national team, Koevermans will also be in charge on India's campaign in 2014 Incheon Asian Games. Furthermore, Technical Director Robert Baan's contract was extended by a year," it said.
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The Executive Committee also re-appointed its General Secretary Kushal Das for a second term of another three years.
The AIFF said its Annual General Body Meeting will be held on December 20. A Special General Body Meeting will also be held on the same day for the proposed changes in AIFF Constitution.