diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index 20bf915..c1cba69 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -77,6 +77,7 @@ Here's how to set up `snappass` for local development.
     $ mkvirtualenv snappass
     $ cd snappass/
     $ python setup.py develop
+    $ pip install -r dev-requirements.txt
 
 4. Create a branch for local development::
 
diff --git a/dev-requirements.txt b/dev-requirements.txt
new file mode 100644
index 0000000..908833f
--- /dev/null
+++ b/dev-requirements.txt
@@ -0,0 +1,3 @@
+coverage==4.2
+flake8==3.0.4
+tox==2.3.1