diff --git a/requirements.txt b/requirements.txt
index 808e7a2..dc04987 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-python-dateutil==2.8.2
+python-dateutil==2.9.0.post0
 click==8.1.7
 docopt==0.6.2
 importlib-metadata==7.0.0