diff --git a/setup.py b/setup.py
index 8b6538b..7821385 100644
--- a/setup.py
+++ b/setup.py
@@ -29,4 +29,5 @@ setup(
             'res2sqlite = galvani.res2sqlite:main',
     ]},
     install_requires=['numpy'],
+    tests_require=['pytest'],
 )
diff --git a/tox.ini b/tox.ini
index bb55395..ca5b805 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
 envlist = py27,py35,py37
 [testenv]
-deps=nose
-commands=nosetests
+deps=pytest
+commands=pytest