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 ## Bug Fixes
 
+- [#380](https://github.com/pybop-team/PyBOP/pull/380) - Restore self._boundaries construction for `pybop.PSO`
 - [#372](https://github.com/pybop-team/PyBOP/pull/372) - Converts `np.array` to `np.asarray` for Numpy v2.0 support.
 - [#165](https://github.com/pybop-team/PyBOP/issues/165) - Stores the attempted and best parameter values and the best cost for each iteration in the log attribute of the optimiser and updates the associated plots.
 - [#354](https://github.com/pybop-team/PyBOP/issues/354) - Fixes the calculation of the gradient in the `RootMeanSquaredError` cost.