RefManageR::ReadBib and RefManageR::WriteBib changes Ois{\'i}n to Ois{\a'\i}n

[jeksterslab]

RefManageR::ReadBib and RefManageR::WriteBib changes Ois{\'i}n to Ois{\a'\i}n in

@Article{Ryan-Hamaker-2021,
  author = {Ois{\'i}n Ryan and Ellen L. Hamaker},
  date = {2021-06},
  journaltitle = {Psychometrika},
  title = {Time to intervene: A continuous-time approach to network analysis and centrality},
  doi = {10.1007/s11336-021-09767-0},
  number = {1},
  pages = {214--252},
  volume = {87},
  publisher = {Springer Science and Business Media {LLC}},
}

is there a way to prevent this from happening? I would appreciate some guidance on this issue.