diff --git a/Pipfile b/Pipfile
index eedba8b3..2b714fe1 100644
--- a/Pipfile
+++ b/Pipfile
@@ -1,13 +1,14 @@
 [dev-packages]
 
-flake8 = ">=3.3.0,<4"
+"flake8" = ">=3.3.0,<4"
 pytest = "*"
 mock = "*"
 sphinx = "<=1.5.5"
 "-e ." = "*"
 twine = "*"
-sphinx-click = "*"
+"sphinx-click" = "*"
+"pytest-xdist" = "*"
 
 
 [requires]
-python_version = "3.6"
\ No newline at end of file
+python_version = "3.6"