diff --git a/tox.ini b/tox.ini
index 43b80f1fd..821e81172 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,8 +7,10 @@ skipsdist = True
 usedevelop = True
 install_command = pip install -U {opts} {packages}
 setenv =
-   VIRTUAL_ENV={envdir}
-deps = -r{toxinidir}/test-requirements.txt
+    VIRTUAL_ENV={envdir}
+deps =
+    -r{toxinidir}/test-requirements.txt
+    -r{toxinidir}/requirements.txt
 commands = stestr run --slowest {posargs}
 
 [testenv:pep8]