Yes, you can add GFCI receptacles.  The difficult part is determining where the ceiling outlet is connected upstream to correctly locate a GFCI receptacle for this outlet. If only the electrical outlet are on a dedicated circuit, you can change the 20-amp breaker in the service panel to a GFCI 20-amp breaker.  Otherwise, you need to determine which receptacle is the first in the series and change that receptacle to a GFCI.  This receptacle will provide feed through protection for all the ones downstream.  Be sure to follow the directions included with the receptacle for proper connections of the wiring. When looking for which receptacle is the first in line, remove the cover plate and unscrew the receptacle from the box.  Pull it out.  There should be 4 wires.  If more than 4 wires, you cannot use this box and you should contact an electrician.  See the Leviton video link here and below for installation instructions.