diff --git a/py.requirements/runtime.txt b/py.requirements/runtime.txt
index 975289bf..d1a0a15b 100644
--- a/py.requirements/runtime.txt
+++ b/py.requirements/runtime.txt
@@ -5,4 +5,4 @@
 
 six==1.12.0
 boto3==1.9.171
-python-dateutil==2.8.0
+python-dateutil==2.8.1