diff --git a/flytekit/core/launch_plan.py b/flytekit/core/launch_plan.py
index 9cd0cc6fb7..a930af93ad 100644
--- a/flytekit/core/launch_plan.py
+++ b/flytekit/core/launch_plan.py
@@ -176,6 +176,7 @@ def create(
             name=name,
             workflow=workflow,
             parameters=wf_signature_parameters,
+            python_interface=temp_interface,
             fixed_inputs=fixed_lm,
             schedule=schedule,
             notifications=notifications,
@@ -334,6 +335,7 @@ def __init__(
         workflow: _annotated_workflow.WorkflowBase,
         parameters: _interface_models.ParameterMap,
         fixed_inputs: _literal_models.LiteralMap,
+        python_interface: Optional[Interface] = None,
         schedule: Optional[_schedule_model.Schedule] = None,
         notifications: Optional[List[_common_models.Notification]] = None,
         labels: Optional[_common_models.Labels] = None,
@@ -349,6 +351,7 @@ def __init__(
         # Ensure fixed inputs are not in parameter map
         parameters = {k: v for k, v in parameters.parameters.items() if k not in fixed_inputs.literals}
         self._parameters = _interface_models.ParameterMap(parameters=parameters)
+        self._python_interface = python_interface
         self._fixed_inputs = fixed_inputs
         # See create() for additional information
         self._saved_inputs: Dict[str, Any] = {}
@@ -362,13 +365,13 @@ def __init__(
         self._security_context = security_context
         self._trigger = trigger
         self._overwrite_cache = overwrite_cache
-
         FlyteEntities.entities.append(self)
 
     def clone_with(
         self,
         name: str,
         parameters: Optional[_interface_models.ParameterMap] = None,
+        python_interface: Optional[Interface] = None,
         fixed_inputs: Optional[_literal_models.LiteralMap] = None,
         schedule: Optional[_schedule_model.Schedule] = None,
         notifications: Optional[List[_common_models.Notification]] = None,
@@ -384,6 +387,7 @@ def clone_with(
             name=name,
             workflow=self.workflow,
             parameters=parameters or self.parameters,
+            python_interface=python_interface or self.python_interface,
             fixed_inputs=fixed_inputs or self.fixed_inputs,
             schedule=schedule or self.schedule,
             notifications=notifications or self.notifications,
@@ -402,7 +406,7 @@ def overwrite_cache(self) -> Optional[bool]:
 
     @property
     def python_interface(self) -> Interface:
-        return self.workflow.python_interface
+        return self._python_interface if self._python_interface else self.workflow.python_interface
 
     @property
     def interface(self) -> _interface_models.TypedInterface: