diff --git a/requirements.txt b/requirements.txt
index 8d3fe3ef5..f28144c69 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,5 +5,6 @@ requests
 decorator
 markdown
 jsonschema
+mock
 psutil; sys_platform == "win32"
 distro; sys_platform != "win32" and sys_platform != "darwin"