diff --git a/requirements_for_test.txt b/requirements_for_test.txt
index 02af5606a..0d9b5f87e 100644
--- a/requirements_for_test.txt
+++ b/requirements_for_test.txt
@@ -1,7 +1,7 @@
 -r requirements.txt
 pycodestyle==2.3.1
 pytest==3.2.2
-pytest-mock==1.6.2
+pytest-mock==1.6.3
 pytest-cov==2.5.1
 pytest-xdist==1.20.0
 coveralls==1.2.0