Stevenage will play another three pre-season games before the start of the League One campaign - all at home.
Boro had already announced a clash with Hertfordshire neighbours Watford, set for July 13, before a trip to Jersey Bulls one week later.
That Channel Islands jaunt is the only one that will be away from the Lamex after three more were added.
They open the five-game series on Tuesday, July 9, when Championship side Norwich City travel to Broadhall Way and the second new date is Tuesday, July 23.
That is another clash versus a Championship outfit, Coventry City, and one which could see the return of old favourite Matt Godden.
Both those games will start at 7pm.
The final contest is against Chelsea U21, that taking place on Saturday, August 3, at 3pm.
It is expected, but not yet confirmed by the club, that the announcement surrounding the new strips for the season will come around, or slightly before, the Norwich clash.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here