Rio Silver Announces Extension of Private Placement

May 4, 2018, Toronto, Ontario, Canada – Rio Silver Inc. ("Rio Silver" or the "Company") (TSX.V: RYO) announces that its previously announced non-brokered private placement (the "Offering") has been extended until June 1, 2018. The Offering consists of up to 2,000,000 units ("Units") at $0.05 per Unit for gross proceeds of up to $100,000 (the "Offering"). Each Unit will consist of one common share of the Company and one common share purchase warrant (each, a "Warrant") of the Company. Each Warrant will entitle the holder to acquire one additional common share of the Company at a price of $0.06 per share for a period of 12 months subject to certain acceleration. Additional details on the Offering can be found in the Company’s news release on March 22, 2018. All other terms remain unchanged.

ON BEHALF OF THE BOARD OF DIRECTORS OF RIO SILVER INC.

Steve Brunelle Chairman

Neither the TSX Venture Exchange nor its Regulation Services Provider accepts responsibility for the adequacy or accuracy of this release.

This news release includes forward-looking statements that are subject to risks and uncertainties. All statements within, other than statements of historical fact, are to be considered forward looking. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include market prices, exploitation and exploration successes, continued availability of capital and financing, and general economic, market or business conditions. There can be no assurances that such statements will prove accurate and, therefore, readers are advised to rely on their own evaluation of such uncertainties. We do not assume any obligation to update any forward-looking statements except as required by applicable laws.

For more information contact:

Jeff Reeder, President, CEO Dan Hamilton, Chief Financial Officer Tel: (647) 302-3290 Tel: (416) 479-9546 Website: www.riosilverinc.com