diff --git a/docs/DEPLOYMENT.md b/docs/DEPLOYMENT.md
index 3102d135..dee25e49 100644
--- a/docs/DEPLOYMENT.md
+++ b/docs/DEPLOYMENT.md
@@ -572,7 +572,8 @@ maps the clean columns by header name. See [ADR-025](adr/025-canonical-import-an
 
 ```bash
 cd tools/import-normalizer
-python -m normalizer            # or the documented normalizer entrypoint
+python3 -m venv .venv && .venv/bin/pip install -r requirements.txt   # once, on a fresh clone
+.venv/bin/python normalize.py
 # writes the four canonical artifacts into ./out/
 ```