Colchester moved up to ninth in League Two with a 4-2 victory at Stevenage courtesy of two late goals.
The visitors made the perfect start, going ahead on 14 minutes after Owen Garvan swung over a corner for Brennan Dickenson to power home a header.
And it was 2-0 four minutes later when Stevenage goalkeeper Jamie Jones brought down Kurtis Guthrie in the box and he dusted himself down to slot home the spot-kick.
But Stevenage fought back with goals either side of the interval, Ben Kennedy finishing off a Steven Schumacher free-kick before Matt Godden broke clear to pick his spot and make it 2-2 on 50 minutes.
But with 10 minutes left Chris Porter stabbed the ball home from close range to put the visitors back in front.
And then in time added on, Porter found on-loan Reading midfielder Tarique Fosu-Henry who drilled the ball past a helpless Jones to seal the victory for the U's and keep them in the hunt for a play-off spot.