diff --git a/README.md b/README.md
index 78f70a2..b684221 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,7 @@ cd pylingual
 python -m venv venv
 source venv/bin/activate
 pip install poetry>=2.0
+poetry lock
 poetry install
 ```