diff --git a/requirements_for_test.txt b/requirements_for_test.txt
index 249799ade..f9d4a68cf 100644
--- a/requirements_for_test.txt
+++ b/requirements_for_test.txt
@@ -3,7 +3,7 @@ flake8==3.5.0
 moto==1.3.1
 pytest==3.5.0
 pytest-env==0.6.2
-pytest-mock==1.8.0
+pytest-mock==1.9.0
 pytest-cov==2.5.1
 pytest-xdist==1.22.2
 coveralls==1.3.0