diff --git a/source/model/PythonModel.py b/source/model/PythonModel.py
index c80095b..d2a5b2b 100644
--- a/source/model/PythonModel.py
+++ b/source/model/PythonModel.py
@@ -45,6 +45,7 @@ class PythonModel(base.BaseModel):
         self._process = subprocess.Popen(
             [
                 "conda", "run",  # run a command within conda
+                "--no-capture-output",  # make conda not capture stdout, allow us to see the stdout
                 "--prefix", self.environment.relative_to(self.path),  # use the model environment
                 "python3", "-c",  # run a python command
 
diff --git a/source/utils/parameters.py b/source/utils/parameters.py
index 69d8fff..ce97040 100644
--- a/source/utils/parameters.py
+++ b/source/utils/parameters.py
@@ -1,4 +1,6 @@
 import inspect
+import typing
+
 import fastapi
 
 
@@ -24,8 +26,10 @@ def load(parameters_definition: dict[str, dict]) -> list[inspect.Parameter]:
         match definition["type"]:
             case "file":
                 # shortcut for uploading a file
-                definition["type"] = fastapi.UploadFile
-
+                definition["type"] = typing.Annotated[
+                    fastapi.UploadFile,
+                    fastapi.File()
+                ]
 
         # deserialize the parameter
         parameter = inspect.Parameter(