diff --git a/generated/python/datadoc_model/datadoc_model/all_optional/model.py b/generated/python/datadoc_model/datadoc_model/all_optional/model.py
index 63fb4c5..1b59444 100644
--- a/generated/python/datadoc_model/datadoc_model/all_optional/model.py
+++ b/generated/python/datadoc_model/datadoc_model/all_optional/model.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  metadata-container-json-schema.json
-#   timestamp: 2025-09-03T10:05:55+00:00
+#   timestamp: 2025-12-03T08:38:27+00:00
 
 from __future__ import annotations
 
@@ -53,7 +53,7 @@ class UseRestrictionItem(DatadocBaseModel):
 
 class CustomTypeForDatasetMetadatum(DatadocBaseModel):
     key: Optional[str] = Field(None, description="Custom type KEY", title="Key")
-    value: Optional[Union[str, list, dict[str, Any]]] = Field(
+    value: Optional[Union[str, list[Any], dict[str, Any]]] = Field(
         None,
         description="Custom type VALUE (of type string, array or object).",
         title="Value",
@@ -88,7 +88,7 @@ class Pseudonymization(DatadocBaseModel):
         description="Type of stable identifier the variable was mapped to prior to pseudonymization.",
         title="Stable identifier type",
     )
-    stable_identifier_version: Optional[str] = Field(
+    stable_identifier_version: Optional[date] = Field(
         None,
         description="Version of stable identifier the variable was mapped to prior to pseudonymization.",
         title="Stable identifier version",
@@ -125,7 +125,7 @@ class SentinelValues(DatadocBaseModel):
 
 class CustomTypeForVariableMetadatum(DatadocBaseModel):
     key: Optional[str] = Field(None, description="Custom type KEY", title="Key")
-    value: Optional[Union[str, list, dict[str, Any]]] = Field(
+    value: Optional[Union[str, list[Any], dict[str, Any]]] = Field(
         None,
         description="Custom type VALUE (of type string, array or object).",
         title="Value",
diff --git a/generated/python/datadoc_model/datadoc_model/required/model.py b/generated/python/datadoc_model/datadoc_model/required/model.py
index 5d91ae6..57646d2 100644
--- a/generated/python/datadoc_model/datadoc_model/required/model.py
+++ b/generated/python/datadoc_model/datadoc_model/required/model.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  metadata-container-json-schema.json
-#   timestamp: 2025-09-03T10:05:57+00:00
+#   timestamp: 2025-12-03T08:38:29+00:00
 
 from __future__ import annotations
 
@@ -53,7 +53,7 @@ class UseRestrictionItem(DatadocBaseModel):
 
 class CustomTypeForDatasetMetadatum(DatadocBaseModel):
     key: Optional[str] = Field(None, description="Custom type KEY", title="Key")
-    value: Optional[Union[str, list, dict[str, Any]]] = Field(
+    value: Optional[Union[str, list[Any], dict[str, Any]]] = Field(
         None,
         description="Custom type VALUE (of type string, array or object).",
         title="Value",
@@ -88,7 +88,7 @@ class Pseudonymization(DatadocBaseModel):
         description="Type of stable identifier the variable was mapped to prior to pseudonymization.",
         title="Stable identifier type",
     )
-    stable_identifier_version: Optional[str] = Field(
+    stable_identifier_version: Optional[date] = Field(
         None,
         description="Version of stable identifier the variable was mapped to prior to pseudonymization.",
         title="Stable identifier version",
@@ -125,7 +125,7 @@ class SentinelValues(DatadocBaseModel):
 
 class CustomTypeForVariableMetadatum(DatadocBaseModel):
     key: Optional[str] = Field(None, description="Custom type KEY", title="Key")
-    value: Optional[Union[str, list, dict[str, Any]]] = Field(
+    value: Optional[Union[str, list[Any], dict[str, Any]]] = Field(
         None,
         description="Custom type VALUE (of type string, array or object).",
         title="Value",
diff --git a/generated/python/datadoc_model/pyproject.toml b/generated/python/datadoc_model/pyproject.toml
index ea2f898..8722c21 100644
--- a/generated/python/datadoc_model/pyproject.toml
+++ b/generated/python/datadoc_model/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "ssb-datadoc-model"
-version = "8.0.0"
+version = "8.0.1"
 description = "Data Model for use in Statistics Norway's Metadata system"
 authors = [{ name = "Statistics Norway", email = "metadata@ssb.no" }]
 license = "MIT"
diff --git a/src/datadoc/datadoc-json-schema.json b/src/datadoc/datadoc-json-schema.json
index 817027e..1328d55 100644
--- a/src/datadoc/datadoc-json-schema.json
+++ b/src/datadoc/datadoc-json-schema.json
@@ -292,7 +292,8 @@
                 "type": "string",
                 "title": "Stable identifier version",
                 "description": "Version of stable identifier the variable was mapped to prior to pseudonymization.",
-                "$comment": "Only relevant when the variable is mapped to a stable identifier."
+                "$comment": "Only relevant when the variable is mapped to a stable identifier.",
+                "format": "date"
               },
               "encryption_algorithm": {
                 "type": "string",