diff --git a/dev-requirements.txt b/dev-requirements.txt
index 7f91f0091..a88ed1f24 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,6 +1,6 @@
 pytest-cov==2.10.1
 pytest-isort==1.2.0
-pytest-mock==3.3.1
+pytest-mock==3.7.0
 pytest-pylint==0.17.0
 pytest-dependency==0.5.1
 yapf==0.28.0