diff --git a/Makefile b/Makefile
index 17b025e..62ce55e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 # Creates a virtual environment and installs dependencies for local development.
 venv:
-	poetry install --no-root
+	poetry install --no-root --with dev
 	poetry run pre-commit install
 
 # Locks the versions of project dependencies for consistency.