diff --git a/tox.ini b/tox.ini
index 6cb9be51a..a573adbf1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -32,7 +32,7 @@ deps =
     pytest-cov==2.2.1
     pytest-faulthandler==1.3.0
     pytest-html==1.8.0
-    pytest-mock==0.11.0
+    pytest-mock==1.0.0
     pytest-qt==1.11.0
     pytest-instafail==0.3.0
     pytest-travis-fold==1.2.0