diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 8ed6bf66..eaffc880 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.37.0
+current_version = 0.38.0
 commit = True
 tag = False
 message = chore: Bump version from {current_version} to {new_version}
diff --git a/HISTORY.md b/HISTORY.md
index 8e554a74..09c48a39 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,10 @@
 # History
 
+## 0.38.0 (2024-10-28)
+
+- (PR #725, 2024-10-28) extras: Fix generation of JSON Schema for Pydantic `Rut` type
+- (PR #726, 2024-10-28) chore(deps): Update `mypy` from 1.11.2 to 1.13.0
+
 ## 0.37.0 (2024-10-25)
 
 - (PR #721, 2024-10-11) rut: Improve type annotation; Add method to validate DV
diff --git a/requirements-dev.in b/requirements-dev.in
index 88e92206..1379f1cf 100644
--- a/requirements-dev.in
+++ b/requirements-dev.in
@@ -10,7 +10,7 @@ bumpversion==0.5.3
 coverage==7.6.1
 flake8==7.1.1
 isort==5.13.2
-mypy==1.11.2
+mypy==1.13.0
 pip-tools==7.4.1
 tox==4.21.0
 twine==5.1.1
diff --git a/requirements-dev.txt b/requirements-dev.txt
index ebfed6f7..92ccab52 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -78,7 +78,7 @@ mccabe==0.7.0
     # via flake8
 mdurl==0.1.2
     # via markdown-it-py
-mypy==1.11.2
+mypy==1.13.0
     # via -r requirements-dev.in
 mypy-extensions==1.0.0
     # via
diff --git a/src/cl_sii/__init__.py b/src/cl_sii/__init__.py
index a4e3c5d7..708d3cb0 100644
--- a/src/cl_sii/__init__.py
+++ b/src/cl_sii/__init__.py
@@ -4,4 +4,4 @@
 
 """
 
-__version__ = '0.37.0'
+__version__ = '0.38.0'
diff --git a/src/cl_sii/extras/pydantic_types.py b/src/cl_sii/extras/pydantic_types.py
index cd0f3a89..b1dd73e7 100644
--- a/src/cl_sii/extras/pydantic_types.py
+++ b/src/cl_sii/extras/pydantic_types.py
@@ -41,6 +41,9 @@ class _RutPydanticAnnotation:
         - Customizing the core schema and JSON schema:
             https://docs.pydantic.dev/2.9/architecture/#customizing-the-core-schema-and-json-schema
             (https://github.com/pydantic/pydantic/blob/v2.9.2/docs/architecture.md#customizing-the-core-schema-and-json-schema)
+        - Implementing __get_pydantic_json_schema__:
+            https://docs.pydantic.dev/2.9/concepts/json_schema/#implementing-__get_pydantic_json_schema__
+            (https://github.com/pydantic/pydantic/blob/v2.9.2/docs/concepts/json_schema.md#implementing-__get_pydantic_json_schema__-)
 
     Examples:
 
@@ -73,6 +76,7 @@ class _RutPydanticAnnotation:
     '78773510-K'
     >>> example_type_adapter.dump_json(cl_sii.rut.Rut('78773510-K'))
     b'"78773510-K"'
+    >>> example_json_schema = example_type_adapter.json_schema()
     """
 
     RUT_CANONICAL_STRICT_REGEX: ClassVar[Pattern] = re.compile(
@@ -99,7 +103,7 @@ def validate_from_str(value: str) -> cl_sii.rut.Rut:
 
         from_str_schema = pydantic_core.core_schema.chain_schema(
             [
-                pydantic_core.core_schema.str_schema(pattern=cls.RUT_CANONICAL_STRICT_REGEX),
+                cls.str_schema(),
                 pydantic_core.core_schema.no_info_plain_validator_function(validate_from_str),
             ]
         )
@@ -117,6 +121,19 @@ def validate_from_str(value: str) -> cl_sii.rut.Rut:
             ),
         )
 
+    @classmethod
+    def __get_pydantic_json_schema__(
+        cls,
+        core_schema: pydantic_core.core_schema.CoreSchema,
+        handler: pydantic.GetJsonSchemaHandler,
+    ) -> pydantic.json_schema.JsonSchemaValue:
+        core_schema = cls.str_schema()
+        return handler(core_schema)
+
+    @classmethod
+    def str_schema(cls) -> pydantic_core.core_schema.CoreSchema:
+        return pydantic_core.core_schema.str_schema(pattern=cls.RUT_CANONICAL_STRICT_REGEX)
+
 
 Rut = Annotated[cl_sii.rut.Rut, _RutPydanticAnnotation]
 """
diff --git a/src/tests/test_extras_pydantic_types.py b/src/tests/test_extras_pydantic_types.py
index e66221d8..3664e122 100644
--- a/src/tests/test_extras_pydantic_types.py
+++ b/src/tests/test_extras_pydantic_types.py
@@ -133,3 +133,35 @@ def test_deserialize_invalid(self) -> None:
 
                 with self.assertRaises(pydantic.ValidationError):
                     self.pydantic_type_adapter.validate_json(data)
+
+    def test_json_schema_for_validation(self) -> None:
+        # -----Arrange-----
+
+        expected_json_schema = {
+            'type': 'string',
+            'pattern': '^(\\d{1,8})-([\\dK])$',
+        }
+
+        # -----Act-----
+
+        actual_json_schema = self.pydantic_type_adapter.json_schema(mode='validation')
+
+        # -----Assert-----
+
+        self.assertEqual(expected_json_schema, actual_json_schema)
+
+    def test_json_schema_for_serialization(self) -> None:
+        # -----Arrange-----
+
+        expected_json_schema = {
+            'type': 'string',
+            'pattern': '^(\\d{1,8})-([\\dK])$',
+        }
+
+        # -----Act-----
+
+        actual_json_schema = self.pydantic_type_adapter.json_schema(mode='serialization')
+
+        # -----Assert-----
+
+        self.assertEqual(expected_json_schema, actual_json_schema)