West Ham come to town on July 21st.
The match is the latest to be confirmed in what is expected to be a busy pre-season for Tony Humes and his team.
The U's opponents will be likely to have a new manager in charge for the game, after Sam Allardyce left the club at the end of the season.
The Hammers will come to town on Tuesday July 21st, a week before we host Ipswich Town, in a 7.45pm kick-off.
Colchester United will take on West Ham in a pre-season friendly at the Weston Homes Community Stadium.
Heybridge Swifts(A) 11th July, 3pm
(H) 21st July, 7.45pm West Ham United
(A) 18th July, 3pm Bishop's Stortford