With the upgrade to Python 3.10, it brings Colab into alignment with the cadence of final regular bug fix releases for Python versions. The next version of Python (3.11) is scheduled to have its final regular bug fix release in April 2024.

Colab’s fallback runtime version

Using the fallback runtime version temporarily allows access to the Python 3.9 runtime, and will be available until mid-May. This is available from the Command Palette via the Use fallback runtime version command when connected to a runtime. Of note, this setting does not persist across sessions — the command will need to be invoked on each new session.

Please report any problems you experience with the new release here.