setup.py: Lock to dateutil versions at or above 2.8.1

This is the version we developed with, and we can't give guarantees for
any earlier ones.

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index 8db6627..3d3800f 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@ setuptools.setup(
         },
 
         install_requires=[
-            'python-dateutil',
+            'python-dateutil>=2.8.1',
             'sqlalchemy>=1.4',
         ]
 )