A method of determining whether a program corresponds to a new version of an application is disclosed. A key value corresponding to the program is determined. A program descriptor corresponding to the program is determined. The program descriptor comprises fields extracted from a program file associated with the program. One or more versions of an application having the same key value are identified. A program descriptor corresponding to each of the one or more versions of the application is identified. The program descriptor corresponding to each of the one or more versions of the application comprises fields extracted from a program file associated with the version of the application. The determination of whether the program corresponds to a new version of the identified application is based on comparing the program descriptor corresponding to the program against the program descriptors corresponding to the one or more versions of the identified application.