diff --git a/docs/CONTRIBUTING.md b/docs/CONTRIBUTING.md
index a097a54..56ea85c 100644
--- a/docs/CONTRIBUTING.md
+++ b/docs/CONTRIBUTING.md
@@ -14,7 +14,7 @@
 
 - download Miniforge3 from [the miniforge github](https://github.com/conda-forge/miniforge?tab=readme-ov-file#download) and install it with the recommended settings.
 - open Miniforge Prompt and navigate to hatyan checkout folder, e.g. ``C:\DATA\hatyan``
-- ``conda create --name hatyan_hmcenv python=3.8.13 git spyder -y`` (``git`` and ``spyder``, python version should be the one at HMC)
+- ``conda create --name hatyan_hmcenv python=3.11.7 git spyder -y`` (``git`` and ``spyder``, python version should be the one at HMC)
 - ``conda activate hatyan_hmcenv``
 - ``pip install -r environment_hmc.txt`` (installs fixed python/package versions like on HMC)
 - ``python -m pip install -e .[dev,docs,examples]`` (pip developer mode, any updates to the local folder are immediately available in your python. It also installs all requirements via pip, square brackets are to install optional dependency groups)