This is the v2.2.0 release of PyFstat, a python package for gravitational-wave data analysis with the F-statistic, dated 08/01/2025. This release supports python versions from 3.9 to 3.12. Python 3.13 support is pending on our key dependency LALSuite adopting it. From the changelog: Changed the core F-stat functions to alternatively take parameter-space points as dictionaries. The old individual arguments are still supported, but deprecated and will be removed in a future version. Added new function utils.plot_spectrogram. Added support for spindown orders >3 in Writer and search classes (up to lalpulsar.PULSAR_MAX_SPINS). Added SearchOverGridFile class that can read a grid file following the format of lalpulsar_ComputeFStatistic_v2. Some internal refactoring of code between mcmc, grid and core classes. Updated various dependencies, mostly for developers. Pinned chainconsumer dependency to <1.0. Added codespell to pre-commit hooks. Fixed some deprecations and code-formatting issues. Extended tests. Changed tutorial notebooks plotting from pcolorfast to pcolormesh. For a list of known issues, or to report any problems, please see: https://github.com/PyFstat/PyFstat/issues

See record https://doi.org/10.5281/zenodo.1243930 for previous versions of PyFstat up to v1.4.1.