 The garrison was also increased.Previously Peveril was guarded by two watchmen and a porter, but this was expanded to a force led by 20 knights shared with Bolsover and Nottingham castles during the revolt.After the revolt ended in 1174, further steps were taken to improve Peveril Castle, and the Pipe Rolls (records of royal expenditure) show that between 1175 and 1177 £184 was spent on building the keep.