diff --git a/nbs/guides/installation.qmd b/nbs/guides/installation.qmd
index d336e9d2b..95ddfb2ef 100644
--- a/nbs/guides/installation.qmd
+++ b/nbs/guides/installation.qmd
@@ -49,6 +49,7 @@ version, create a virtual environment, and install pyrovelocity from a blank dir
 echo "3.10" > .python-version
 uv python install
 uv venv -p 3.10
+source .venv/bin/activate
 uv pip install pyrovelocity
 ```