diff --git a/jeeves/core/executor.py b/jeeves/core/executor.py
index 9953bc8..8aff350 100644
--- a/jeeves/core/executor.py
+++ b/jeeves/core/executor.py
@@ -16,6 +16,7 @@ class Executor:
             for argument in self._flow.arguments:
                 # TODO: What happens if not default?
                 self._arguments[argument.name] = defined_arguments.get(argument.name, argument.default)
+        self._execution.arguments = self._arguments
 
     @property
     def steps(self):