diff --git a/docs/advanced-usage.md b/docs/advanced-usage.md
index 6ac80deb..1c59b872 100644
--- a/docs/advanced-usage.md
+++ b/docs/advanced-usage.md
@@ -319,6 +319,7 @@ steps:
 - run: poetry install
 - run: poetry run pytest
 ```
+Note: "poetry install" uses the Python version from the runner if "setup-python" doesn't match "pyproject.toml".
 
 **Using a list of file paths to cache dependencies**
 ```yaml