Upgrading Service 7.5 to 7.5 MP1 requires 7.5.2001

When running the System diagnostic before doing an in place upgrade of ServiceDesk 7.5 to 7.5 MP1.  I get the message, "Workflow Server version is [7.5.2000.472] but a version between [7.5.2001 and 7.5.2001.9999] is required.  I can't find any other available upgrades that will take me to 7.5.2001.  Has anybody else run into this?