diff --git a/cdr_schemas/cdr_responses/prospectivity.py b/cdr_schemas/cdr_responses/prospectivity.py
index 7c28890..c39a2a0 100644
--- a/cdr_schemas/cdr_responses/prospectivity.py
+++ b/cdr_schemas/cdr_responses/prospectivity.py
@@ -92,5 +92,9 @@ class ProcessDataLayers(BaseModel):
         default_factory=list,
         description="Vector features and preprocess steps. EPSG:4326",
     )
+    previously_processed: List[dict] = Field(
+        description="Preprocessed layers that have already been processed in a previous event",
+        default_factory=list,
+    )
 
     model_config = ConfigDict(protected_namespaces=())
diff --git a/pyproject.toml b/pyproject.toml
index 3157249..c370dfa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "cdr_schemas"
-version = "0.4.15"
+version = "0.4.16"
 description = "CDR Schemas"
 authors = []
 readme = "README.md"