Management of Sirios Resources Inc. (TSX-V:SOI) is pleased to announce the results of four drill holes undertaken in the Eclipse area, located at approximately 750 metres west of the main drilled area on the Cheechoo gold property. Drill holes #161 and 163 intersected respectively 49.5 g/t Au over 2.2 m and 97.4 g/t Au over 2.4 m. These mineralized intervals are part of a high-grade zone that was intersected previously by drill holes #95, 97 and 99, yielding 11.9 g/t Au over 13.5 m, including 100 g/t Au over 1 m (press release May 9, 2017). This zone is continuous laterally for approximately 150 metres, between #161 and 97. It is interpreted as being the depth extension of the high-grade veins system of the Moni Showing, exposed on the surface on the neighbouring Eleonore South property, located only a few metres south of the border between the two properties.

Dominique Doucet, President, states: "The zone of high-grade gold veins of the Eclipse area represents an important asset to our Cheechoo project. It adds high-grade veins to the ones in the large, low-grade gold envelope of the main area located to the east. The near surface occurrence of these gold-rich veins can provide a greater flexibility to a future mining project."

Significant results of drill holes CH18-161, 163, 166 and 168

Drill hole CH18- From  To    Width Au (g/t) *
161              24.5  28.5  4.0   2.1
35.5             37.0  1.5   5.5
91.8             94.0  2.2   49.5
91.8             92.6  0.8   133.9
                 82.9  84.2  1.3   3.1
163              90.0  92.4  2.4   97.5
                 90.8  91.6  0.8   289.7
166              47.7  49.4  1.7   1.0
                 64.3  66.8  2.5   1.2
168              106.4 109.0 2.6   1.2

*Grade un-cut

Two figures accompanying this announcement are available at:

http://www.globenewswire.com/NewsRoom/AttachmentNg/3fd891fa-3c02-4974-8df8-4e34cfc50356

http://www.globenewswire.com/NewsRoom/AttachmentNg/56ec6338-cb55-4737-ab26-cf79f6da1a50

The gold zone of the Eclipse area forms a geometrically complex plain with an east-northeast orientation and dipping at approximately 60 degrees to the north-west. The trace of the zone at surface on the map below is based on surface data of Eleonore South (press release of Eastmain Res. October 17, 2017) and on multiple mineralized boulders found on surface on Cheechoo (press release February 28, 2017)

A table of collar coordinates is available at the following link: http://www.sirios.com/BD-Coordinates-Drilled-20180821/

Sirios' 100% owned Cheechoo property is located at Eeyou Istchee James Bay, Quebec, approximately 800 km north of Montreal, 200 km east of Wemindji and less than 10 km from Goldcorp's Eleonore gold mine.

Assay quality control

All NQ drill core was described by Sirios personnel at the Cheechoo exploration camp. The drill core was then sent to Rouyn-Noranda to be sawed in half, with one half sent to a commercial laboratory for assaying and other half retained for future reference. A strict QA/QC program was followed by integrating blanks and certified reference standards to the core sample sequence. The samples were assayed for gold by fire assay with an atomic absorption finish by Actlabs in Ste-Germaine-Boule. Samples assaying more than 2 g/t, as well as drill core samples with visible gold, were assayed by fire assay with metallic sieve based on a 1 kg sample.

Jordi Turcotte, MSc., Geo., and Nicole Gauthier, MSc., Geo, Qualified Persons pursuant to National Instrument 43-101, have prepared and verified the technical information of this press release, as well as reviewing the final text.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release

For information, contact:

Dominique Doucet, Eng., President, CEO ddoucet@sirios.com

Nicole Gauthier, Exploration Manager, ngauthier@sirios.com

Tel.: (514) 510-7961