diff --git a/docs/development_environment.mdx b/docs/development_environment.mdx
index 338aaa13..e9efdc0e 100644
--- a/docs/development_environment.mdx
+++ b/docs/development_environment.mdx
@@ -65,7 +65,11 @@ It is also possible to debug a remote Home Assistance instance (e.g., production
 
 _You only need these instructions if you do not want to use devcontainers._
 
-It is also possible to set up a more traditional development environment. See the section below for your operating system. Make sure your Python version is 3.12.
+It is also possible to set up a more traditional development environment. See the section below for your operating system. Make sure your Python version is 3.13.
+
+:::note
+If you proceed without the correct Python version installed, you will end up with a virtual environment that is incompatible with Home Assistant. Once you have installed the correct version, remove the `venv` directory and continue with the setup to recreate it with the correct version.
+:::
 
 ### Developing on Ubuntu / Debian