.. post:: December 16, 2025 :language: en :tags: announcement-python-3-9-eol .. _announcement-python-3-9-eol: Neuron no longer supports Python 3.9 starting with Neuron version 2.27 ----------------------------------------------------------------------- Starting with Neuron Release 2.27, Neuron no longer includes support for Python 3.9 as it has reached its end-of-life status. If you currently use Python 3.9, you are advised to migrate to a Neuron supported Python version (3.10, 3.11 or 3.12) to avoid security issues and bugs. For a list of supported Python versions according to Neuron package, refer to :doc:`the list of current Neuron-supported package and library versions `.