diff --git a/Pipfile b/Pipfile
index e38d4f45..852f1bbb 100644
--- a/Pipfile
+++ b/Pipfile
@@ -14,6 +14,7 @@ requests = "*"
 numpy = "*"
 jsondiff = "*"
 requests-cache = "*"
+mock = "*"
 
 [dev-packages]
 metakb = {editable = true, path = "."}