diff --git a/cdr_schemas/prospectivity_input.py b/cdr_schemas/prospectivity_input.py
index 89694c6..379a07d 100644
--- a/cdr_schemas/prospectivity_input.py
+++ b/cdr_schemas/prospectivity_input.py
@@ -1,5 +1,4 @@
 from enum import Enum
-from pathlib import Path
 from typing import List, Optional, Union
 
 from geojson_pydantic import Polygon
@@ -68,7 +67,7 @@ class CriticalMineralAssessment(BaseModel):
 
 class CMATemplate(BaseModel):
     cma: CriticalMineralAssessment
-    file: Union[str, Path]
+    file: str
 
 
 class StackMetaData(BaseModel):