Print liquid supplies for printing devices are disclosed. A print liquid supply includes a container having a wall; a dock connector to enable selective coupling of the print liquid supply with a printing device; and a clamping support structure coupled with the dock connector, the wall of the container clamped therebetween. One of the clamping support structure or the dock connector including a tongue latched onto a groove in the other one of the clamping support structure or the dock connector.