diff --git a/outlines/generate/json.py b/outlines/generate/json.py
index eca8d7d17..75f83f69e 100644
--- a/outlines/generate/json.py
+++ b/outlines/generate/json.py
@@ -5,7 +5,7 @@
 from pydantic import BaseModel
 
 from outlines.fsm.json_schema import build_regex_from_schema, get_schema_from_signature
-from outlines.generate.api import SequenceGenerator
+from outlines.generate.api import SequenceGenerator, SequenceGeneratorAdapter
 from outlines.models import OpenAI
 from outlines.samplers import Sampler, multinomial
 
@@ -18,7 +18,7 @@ def json(
     schema_object: Union[str, object, Callable, Dict],
     sampler: Sampler = multinomial(),
     whitespace_pattern: Optional[str] = None,
-) -> SequenceGenerator:
+) -> Union[SequenceGenerator, SequenceGeneratorAdapter]:
     """
     Generate structured JSON data with a `Transformer` model based on a specified JSON Schema.
 
@@ -39,7 +39,7 @@ def json(
 
     Returns
     -------
-    A `SequenceGenerator` instance that generates text constrained by the schema_object and
+    A `SequenceGenerator` or `SequenceGeneratorAdapter` instance that generates text constrained by the schema_object and
     transforms the result if BaseModel is used.
 
     """
diff --git a/tests/generate/test_integration_llamacpp.py b/tests/generate/test_integration_llamacpp.py
index 0203ddefc..31003e753 100644
--- a/tests/generate/test_integration_llamacpp.py
+++ b/tests/generate/test_integration_llamacpp.py
@@ -321,28 +321,28 @@ class UserPydantic(BaseModel):
 
     # Check finite state machines are the same
     assert (
-        generator_callable.fsm.states_to_token_maps
-        == generator_pydantic.fsm.states_to_token_maps
-        == generator_dict.fsm.states_to_token_maps
-        == generator_str.fsm.states_to_token_maps
+        generator_callable.logits_processor.fsm.states_to_token_maps
+        == generator_pydantic.logits_processor.fsm.states_to_token_maps
+        == generator_dict.logits_processor.fsm.states_to_token_maps
+        == generator_str.logits_processor.fsm.states_to_token_maps
     )
     assert (
-        generator_callable.fsm.empty_token_ids
-        == generator_pydantic.fsm.empty_token_ids
-        == generator_dict.fsm.empty_token_ids
-        == generator_str.fsm.empty_token_ids
+        generator_callable.logits_processor.fsm.empty_token_ids
+        == generator_pydantic.logits_processor.fsm.empty_token_ids
+        == generator_dict.logits_processor.fsm.empty_token_ids
+        == generator_str.logits_processor.fsm.empty_token_ids
     )
     assert (
-        generator_callable.fsm.eos_token_id
-        == generator_pydantic.fsm.eos_token_id
-        == generator_dict.fsm.eos_token_id
-        == generator_str.fsm.eos_token_id
+        generator_callable.logits_processor.fsm.eos_token_id
+        == generator_pydantic.logits_processor.fsm.eos_token_id
+        == generator_dict.logits_processor.fsm.eos_token_id
+        == generator_str.logits_processor.fsm.eos_token_id
     )
     assert (
-        generator_callable.fsm.final_states
-        == generator_pydantic.fsm.final_states
-        == generator_dict.fsm.final_states
-        == generator_str.fsm.final_states
+        generator_callable.logits_processor.fsm.final_states
+        == generator_pydantic.logits_processor.fsm.final_states
+        == generator_dict.logits_processor.fsm.final_states
+        == generator_str.logits_processor.fsm.final_states
     )
 
 
diff --git a/tests/generate/test_integration_vllm.py b/tests/generate/test_integration_vllm.py
index e4d703a18..8b27166a4 100644
--- a/tests/generate/test_integration_vllm.py
+++ b/tests/generate/test_integration_vllm.py
@@ -309,28 +309,28 @@ class UserPydantic(BaseModel):
 
     # Check finite state machines are the same
     assert (
-        generator_callable.fsm.states_to_token_maps
-        == generator_pydantic.fsm.states_to_token_maps
-        == generator_dict.fsm.states_to_token_maps
-        == generator_str.fsm.states_to_token_maps
+        generator_callable.logits_processor.fsm.states_to_token_maps
+        == generator_pydantic.logits_processor.fsm.states_to_token_maps
+        == generator_dict.logits_processor.fsm.states_to_token_maps
+        == generator_str.logits_processor.fsm.states_to_token_maps
     )
     assert (
-        generator_callable.fsm.empty_token_ids
-        == generator_pydantic.fsm.empty_token_ids
-        == generator_dict.fsm.empty_token_ids
-        == generator_str.fsm.empty_token_ids
+        generator_callable.logits_processor.fsm.empty_token_ids
+        == generator_pydantic.logits_processor.fsm.empty_token_ids
+        == generator_dict.logits_processor.fsm.empty_token_ids
+        == generator_str.logits_processor.fsm.empty_token_ids
     )
     assert (
-        generator_callable.fsm.eos_token_id
-        == generator_pydantic.fsm.eos_token_id
-        == generator_dict.fsm.eos_token_id
-        == generator_str.fsm.eos_token_id
+        generator_callable.logits_processor.fsm.eos_token_id
+        == generator_pydantic.logits_processor.fsm.eos_token_id
+        == generator_dict.logits_processor.fsm.eos_token_id
+        == generator_str.logits_processor.fsm.eos_token_id
     )
     assert (
-        generator_callable.fsm.final_states
-        == generator_pydantic.fsm.final_states
-        == generator_dict.fsm.final_states
-        == generator_str.fsm.final_states
+        generator_callable.logits_processor.fsm.final_states
+        == generator_pydantic.logits_processor.fsm.final_states
+        == generator_dict.logits_processor.fsm.final_states
+        == generator_str.logits_processor.fsm.final_states
     )