diff --git a/Pipfile b/Pipfile
index c5a4c49f..83a9df29 100644
--- a/Pipfile
+++ b/Pipfile
@@ -18,5 +18,6 @@ coverage = "*"
 coveralls = "*"
 twine = "*"
 contextlib2 = "*"
+locustio = "*"
 
 [scripts]