diff --git a/outlines/generate/json.py b/outlines/generate/json.py
index ab05df1f4..f0968df0b 100644
--- a/outlines/generate/json.py
+++ b/outlines/generate/json.py
@@ -50,7 +50,7 @@ def json(
         schema = pyjson.dumps(schema_object.model_json_schema())
         regex_str = build_regex_from_schema(schema, whitespace_pattern)
         generator = regex(model, regex_str, sampler)
-        generator.format_sequence = lambda x: schema_object.parse_raw(x)
+        generator.format_sequence = lambda x: schema_object.model_validate_json(x)
     elif isinstance(schema_object, type(Enum)):
         schema = pyjson.dumps(get_schema_from_enum(schema_object))
         regex_str = build_regex_from_schema(schema, whitespace_pattern)
@@ -95,7 +95,7 @@ def json_openai(
         schema = schema_object.model_json_schema()
         schema["additionalProperties"] = False
         schema = pyjson.dumps(schema)
-        format_sequence = lambda x: schema_object.parse_raw(x)
+        format_sequence = lambda x: schema_object.model_validate_json(x)
     elif isinstance(schema_object, str):
         schema = schema_object
         format_sequence = lambda x: pyjson.loads(x)
diff --git a/tests/models/test_openai.py b/tests/models/test_openai.py
index f4b97f36a..3907a903a 100644
--- a/tests/models/test_openai.py
+++ b/tests/models/test_openai.py
@@ -99,7 +99,7 @@ class Person(BaseModel):
     # assert success for valid response
     with patched_openai(completion=completion) as model:
         generator = generate.json(model, Person)
-        assert generator("fastest person") == Person.parse_raw(completion)
+        assert generator("fastest person") == Person.model_validate_json(completion)
 
     # assert fail for non-json response
     with patched_openai(completion="usain bolt") as model: