diff --git a/requirements.txt b/requirements.txt
index 0ce23e001..dcbb76e9f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,3 @@
 lxml>=4.2.4
-beautifulsoup4==4.6.1
+beautifulsoup4==4.6.0
+mock==2.0.0