Abstract: A method and system for managing versions of program assets of a library is disclosed, to be used for example with IBM Infosphere Datastage™. Each program asset has source code which is protected. A selection of one or more program asset to be exported into the utility application is selected. Instructions for building the source code of each pro gram asset is extracted from the library and into a digest. A database stores each digest as a new instance of the digest in a data storage and associates thereto a new version identifier representing a new version of the corresponding program asset. A checked-in status is further associated to each new instance of digest, to indicate that the digest is stored in the utility application.