diff --git a/packages/sst/support/python-runtime/runtime.py b/packages/sst/support/python-runtime/runtime.py
index 769fea818..126626930 100644
--- a/packages/sst/support/python-runtime/runtime.py
+++ b/packages/sst/support/python-runtime/runtime.py
@@ -77,7 +77,7 @@ def handleUnserializable(obj):
     context = Context(
         r.getheader('Lambda-Runtime-Invoked-Function-Arn'),
         r.getheader('Lambda-Runtime-Aws-Request-Id'),
-        r.getheader('Lambda-Runtime-Deadline-Ms'),
+        int(r.getheader('Lambda-Runtime-Deadline-Ms')),
         r.getheader('Lambda-Runtime-Cognito-Identity'),
         r.getheader('Lambda-Runtime-Client-Context'),
         r.getheader('Lambda-Runtime-Log-Group-Name'),