Installation issues Python 3.13

General
,
1

Despite the official CrewAI installation instructions indicating Python >=3.10 <=3.13,
command “pip install crewai” fails at dependency tiktoken, attempts to build tiktoken-0.7.0, which does not build on Python 3.13, pyo3 version not supported.

Perhaps a dependency bump to tiktoken-0.8.0 (released Oct 4th) might help?

Error message indicated:

Building wheels for collected packages: tiktoken
Building wheel for tiktoken (pyproject.toml) … error
error: subprocess-exited-with-error

× Building wheel for tiktoken (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [130 lines of output]
…
error: failed to run custom build command for pyo3-ffi v0.20.3

  Caused by:
    process didn't exit successfully: `C:\Users\<username>\AppData\Local\Temp\pip-install-7lov9mzv\tiktoken_d3c10f57e5a044198ab2f2605f76cf80\target\release\build\pyo3-ffi-4512adfd46cc9bfd\build-script-build` (exit code: 1)

— stderr
error: the configured Python interpreter version (3.13) is newer than PyO3’s maximum supported version (3.12)
= help: please check if an updated version of PyO3 is available. Current version: 0.20.3
odule --crate-type cdylib --` failed with code 101
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.roblem with pip.
ERROR: Failed building wheel for tiktoken
Failed to build tiktoken ml based projects (tiktoken)
ERROR: ERROR: Failed to build installable wheels for some pyproject.toml based projects (tiktoken)

This is a dependency rabbit hole for new users, who are likely to want the most up to date versions of tools, this may present a barrier to adoption.

2

For Visual Studio Code (PowerShell terminal), the following commands allowed the build of tiktoken-0.7.0 to succeed:

$env:PYO3_USE_ABI3_FORWARD_COMPATIBILITY = "1"
pip install crewai

It’s too early to say if this is a good idea at all or if it will break anything, but it’s one less hurdle.

Good luck all!

3 Likes
3

For me it only worked when I downgraded to python 3.12.8

1 Like
4

Didn’t work for me. My python version is 3.13 and Visual Studio Code version is 1.95.2

1 Like
5

I tried this as well. Did not work. So I am stuck in the same depndency problem with python 3.13.1 on MAC.

6

This worked for me. Thank you

7

We updated the docs to show the stable python versions to use with CrewAI Python >=3.10 and <3.13

TLDR: v 3.13 is unstable and will throw the pyo3 error from tiktoken package, so do not use it.