An electrical connector assembly includes a cable assembly having a cable bundle of cables and a conductive cable shield surrounding and providing electrical shielding for the cable bundle. The cable assembly includes an electrical connector a housing holding contacts and a conductive backshell having a cavity that receives the electrical connector to provide electrical shielding for the electrical connector. The backshell has a cable channel at a rear of the backshell that receives the cable. A ground spring is coupled to the cable and positioned between the cable bundle and the cable shield. The ground spring includes spring members engaging the inner surface of the cable shield and biasing the cable shield radially outward. The ground spring is received in the cable channel and forces the outer surface of the cable shield outward against the backshell to electrically connect the cable shield to the backshell.