diff --git a/requirements.txt b/requirements.txt
index 2417c77..099a854 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 wiringpi>=2.60.0; sys_platform == 'linux'
 pika>=1.2.0
 pyserial>=3.4
-python-dateutil>=2.8.0
+python-dateutil>=2.9.0.post0
 setuptools>=45.1.0
 pip
 numpy>=1.21.3