diff --git a/requirements.txt b/requirements.txt
index ae3573b..a8e175c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 requests>=2.14.0
 pyyaml==5.1.2
 tqdm>=4.35.0
-mock==1.3.0
+mock==4.0.2
 pytz>=2019.2
 dateutils>=0.6.6
 certifi