I have ESPHome 2025.7.5 installed on Win 11. No later versions are able to be installed either through upgrade - upgrade or by upgrade to specific version via pip3 install esphome==2025.11.0. Compiling HA Voice latest version complains of ESPHome version too old.
Old python?
In the case of docker the repository moved. Not sure about others
likely … if
pip check
gives strange version incompatabilities of required components one can’t solve manually a python update was my solution to get it solved. Took me some hours until I considered to update python since none of the errors shown pointed into that direction.