Hello, If you use wmfdata-python <https://github.com/wikimedia/wmfdata-python>, please *upgrade it soon* to version 2.2.0 in order to allow its presto support to keep working. We have just deployed a new version of our conda-analytics <https://wikitech.wikimedia.org/wiki/Data_Engineering/Systems/Conda> environment, which has this new version of wmfdata installed by default, so you can use conda-analytics-clone to make a new, custom environment for yourself. Alternatively, you can update it within your existing environments with: pip install --upgrade git+https://github.com/wikimedia/wmfdata-python.git@release This upgrade is necessary because we are in the process of improving our Presto <https://wikitech.wikimedia.org/wiki/Analytics/Systems/Presto> services, for which we need to change the TLS certificates that secure our client connections to the Presto cluster. Versions of wmfdata-python prior to v2.2.0 were hard-coded <https://github.com/wikimedia/wmfdata-python/commit/b7b5df4651c880ad6fc0980c037e15feab879a88> to use our Puppet based Certificate Authority. We will implement a change <https://gerrit.wikimedia.org/r/c/operations/puppet/+/709713> to the Presto configuration to switch the certificates *around mid-January 2024*, at which point any versions of wmfdata-python prior to 2.2.0 will cease to connect to Presto and will return an error. I will send further updates nearer the time, with more precise dates. Please do let me know if you have any queries or concerns about this change. Kind regards, Ben -- *Ben Tullis*(he/him) Senior Site Reliability Engineer Wikimedia Foundation <https://wikimediafoundation.org/>