A line retention device configured to releasably retain one or more lines therebetween. The device has a retention bracket with a female detent on a first end portion and having a receiving aperture defined by a primary opening and a keyway. A male detent is on a second end portion and has a proximal portion, a head portion, and an intermediate portion. The intermediate portion extends through the receiving aperture when the retention bracket is in the closed position with proximal and head portions on one side of the female detent and the intermediate portion on the opposite side of the female detent. The intermediate portion is configured to flex between a first, relaxed position with a necked down portion in the keyway so the male detent is blocked from moving out of the female detent portion and a second release position wherein the necked down portion is out of the keyway and aligned with the primary opening so the male detent can pass through the primary opening to move the retention bracket from the closed position to the open position.