UPDATE 1-CGI signs 3-year support contract with Rio Tinto

* Contract includes a renewal option

* CGI to support back-end operations

Nov 10 (Reuters) - Outsourcing company CGI Group Inc (GIBa.TO) said it signed a three-year application support services contract with Rio Tinto Ltd/Plc (RIO.AX) (RIO.L), the world's second-largest iron ore miner.

The contract includes a renewal option of two supplementary periods of one year each, CGI said in a statement.

CGI will maintain Rio Tinto Alcan's application portfolio that supports its back-end operations including finance, sales, maintenance, HR, procurement and payroll functions.

Shares of CGI were up 4 Canadian cents at C$12.91 in Tuesday morning trade on the Toronto Stock Exchange. (Reporting by Amit Kumar in Bangalore; Editing by Ratul Ray Chaudhuri)