diff --git a/Pipfile b/Pipfile
index a4e26d4..105dc0f 100644
--- a/Pipfile
+++ b/Pipfile
@@ -13,4 +13,4 @@ requests = ">=2.21.0"
 python-dateutil = ">=2.8.1"
 
 [requires]
-python_version = "3.6"
+python_version >= "3.6"