OLDWICK, N.J.--(BUSINESS WIRE)--A.M. Best has upgraded the financial strength rating (FSR) to B+ (Good) from B (Fair) and the issuer credit ratings to “bbb-” from “bb+” of Liberty Bankers Life Insurance Company (Oklahoma City, OK), and its wholly owned life insurance subsidiaries, The Capitol Life Insurance Company (Dallas, TX) and American Benefit Life Insurance Company (Oklahoma City, OK), together known as the Liberty Bankers Group. The outlook for all ratings is stable. The rating upgrades