diff --git a/tox.ini b/tox.ini
index 9166f180c..7c53068e7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,6 +19,7 @@ usedevelop = true
 setenv = QT_QPA_PLATFORM_PLUGIN_PATH={envdir}/Lib/site-packages/PyQt5/plugins/platforms
 passenv = DISPLAY XAUTHORITY HOME
 deps =
+    -r{toxinidir}/requirements.txt
     py==1.4.27
     pytest==2.7.1
     pytest-capturelog==0.7