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SOI.V ·

Sirios starts a major re-assaying program for the Cheechoo Gold Project, Quebec

Corporate Updates

TSX-V : SOI April 28, 2021

Sirios starts a major re-assaying program for the Cheechoo Gold

Project, Quebec

Montreal, Quebec - The management of Sirios Resources Inc. (TSXV: SOI) is pleased to

announce that a major re-assaying program was initiated recently for the Cheechoo gold project,

Eetou Istchee James Bay, Quebec. Several thousand core samples used to define the Cheechoo

gold deposit may be re-assayed using the “LeachWELL” process (cyanide bottle roll leach) on

one kilogram of material per sample. To date, 643 samples have been sent to the AGAT and

Actlabs laboratories.

This program results from a statistical analysis conducted by Sirios’ geologists showing that the

gold grade is generally higher and more representative when the sample weight is greater than

the 50 grams normally used in laboratory. This relationship between the measured gold grade

and the size of the assayed sample is typical of the “nugget effect ” and was confirmed by

previous mineralogical and metallurgical studies.

Dominique Doucet, founder and CEO of Sirios, stated: " Based on the results of the re -sampling

program, we believe that the average gold grade of the Cheechoo deposit will improve. The

drilling program that will be car ried out this summer and the re -assaying program will increase

the quality of the Cheechoo deposit and possibly the average gold grade. "

The scientific and technical content of this press release has been reviewed and approved by

Dominique Doucet, P.Eng. President and CEO of Sirios Resources Inc. and Jordi Turcotte,

P.Geo., Senior Geologist, Qualified Persons as defined by NI 43-101.

About the Cheechoo Property

The Cheechoo gold property, wholly -owned by Sirios, is located in Eeyou Istchee James Bay,

Quebec, less than 9 km from Newmont’s Eleonore gold mine. The latest resource estimate for

the Cheechoo project (October 2020) estimated an inferred resource of 2.0 million ounces of

gold contained in 93.0 million tonnes of rock at an average grade of 0.65 g/t Au, with significant

potential to increase this resource.1

1 BBA, Mineral Resource Estimate Update for The Cheechoo Project, 31/10/2020

About Sirios

A pioneer in the discovery of significant gold deposits in Eeyou Istchee James Bay, Quebec,

Canada, Sirios Resources Inc. is focusing primarily on its Cheechoo gold discovery, while

actively exploring for the gold potential of its other properties.

Forward-Looking Statements:

This news release contains "forward -looking information" within the meaning of applicable

Canadian securities legislation based on expectations , estimates and projections as at the date of

this news release. Forward -looking information involves risks, uncertainties and other factors

that could cause actual events, results, performance, prospects and opportunities to differ

materially from those e xpressed or implied by such forward -looking information. Factors that

could cause actual results to differ materially from such forward -looking information include,

but are not limited to, capital and operating costs varying significantly from estimates; t he

preliminary nature of metallurgical test results; delays in obtaining or failures to obtain required

governmental, environmental or other project approvals; uncertainties relating to the availability

and costs of financing needed in the future; changes in equity markets; inflation; fluctuations in

commodity prices; delays in the development of projects; the other risks involved in the mineral

exploration and development industry; and those risks set out in the Company’s public

documents filed on SEDAR at www.sedar.com. Although the Company believes that the

assumptions and factors used in preparing the forward-looking information in this news release

are reasonable, undue reliance should not be placed on such information, which only applies as

of the date of this news release, and no assurance can be given that such events will occur in the

disclosed time frames or at all. The Company disclaims any intention or obligation to update or

revise any forward-looking information, whether as a result of new information, future events or

otherwise, other than as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the Rules of the TSX

Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Contact :

Dominique Doucet, President, CEO, Eng.

Tel. : (514) 918-2867

[email protected]

website : www.sirios.com