diff --git a/Makefile b/Makefile
index 0e4cf2a..77cf721 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 doc:
-	poetry run python -m tools.mdtable
+	uv run python -m tools.mdtable
 
 schemas:
-	poetry run python -m csfunctions.tools.write_schema
+	uv run python -m csfunctions.tools.write_schema
diff --git a/csfunctions/objects/document.py b/csfunctions/objects/document.py
index f47f2e9..4f36342 100644
--- a/csfunctions/objects/document.py
+++ b/csfunctions/objects/document.py
@@ -68,6 +68,8 @@ class Document(BaseObject):
     z_art: str | None = Field(None, description="Document Type")
     mapped_materialnr_erp: str | None = Field(None, description="Materialnumber ERP")
     cdb_object_id: str | None = Field(None, description="Object ID")
+    pruefer: str | None = Field(None, description="Reviewer")
+    pruef_datum: datetime | None = Field(None, description="Review Date")
 
     # Custom Char Fields
     cca_char_doc_1: str | None = Field(None, description="Custom Char Field")
diff --git a/json_schemas/request.json b/json_schemas/request.json
index 16d9232..2040695 100644
--- a/json_schemas/request.json
+++ b/json_schemas/request.json
@@ -691,6 +691,33 @@
           "description": "Object ID",
           "title": "Cdb Object Id"
         },
+        "pruefer": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": null,
+          "description": "Reviewer",
+          "title": "Pruefer"
+        },
+        "pruef_datum": {
+          "anyOf": [
+            {
+              "format": "date-time",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": null,
+          "description": "Review Date",
+          "title": "Pruef Datum"
+        },
         "cca_char_doc_1": {
           "anyOf": [
             {