diff --git a/sleuth/requirements.txt b/sleuth/requirements.txt
index 2e921cb0..730ad407 100644
--- a/sleuth/requirements.txt
+++ b/sleuth/requirements.txt
@@ -13,7 +13,7 @@ py==1.11.0
 pyparsing==3.2.1
 pytest==7.4.4
 pytest-freezegun==0.4.2
-python-dateutil==2.8.2
+python-dateutil==2.9.0.post0
 python-json-logger==2.0.7
 requests==2.32.3
 s3transfer==0.6.1