diff --git a/tox.ini b/tox.ini
index d6a60d5..f5814d0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,6 @@
 envlist=py35,py36,py37,docs
 [testenv]
 deps=
-    -rrequirements.txt
     -rplotting.txt
     nose
     coverage