diff --git a/Pipfile b/Pipfile
index b2c62c2..37f2a40 100644
--- a/Pipfile
+++ b/Pipfile
@@ -16,3 +16,6 @@ PyYAML = "*"
 
 [requires]
 python_version = "3.7"
+
+[pipenv]
+allow_prereleases = true