diff --git a/{{cookiecutter.project_slug}}/dev-requirements.in b/{{cookiecutter.project_slug}}/dev-requirements.in
index 1e77b75..f0b797f 100644
--- a/{{cookiecutter.project_slug}}/dev-requirements.in
+++ b/{{cookiecutter.project_slug}}/dev-requirements.in
@@ -1,3 +1,5 @@
+-c ./requirements.txt
+
 black
 invoke
 isort