diff --git a/outlines/caching.py b/outlines/caching.py
index 0831c40bb..6882bac6b 100644
--- a/outlines/caching.py
+++ b/outlines/caching.py
@@ -51,7 +51,7 @@ def get_cache():
     """
     from outlines._version import __version__ as outlines_version  # type: ignore
 
-    outlines_cache_dir = os.environ.get('OUTLINES_CACHE_DIR')
+    outlines_cache_dir = os.environ.get("OUTLINES_CACHE_DIR")
     xdg_cache_home = os.environ.get("XDG_CACHE_HOME")
     home_dir = os.path.normpath(os.path.expanduser("~"))
     if outlines_cache_dir:
diff --git a/outlines/fsm/types.py b/outlines/fsm/types.py
index e5a1f8f47..f6409aa66 100644
--- a/outlines/fsm/types.py
+++ b/outlines/fsm/types.py
@@ -4,12 +4,15 @@
 
 from outlines.types import Regex, boolean as boolean_regex, date as date_regex
 from outlines.types import datetime as datetime_regex
-from outlines.types import integer as integer_regex, number as number_regex, time as time_regex
+from outlines.types import (
+    integer as integer_regex,
+    number as number_regex,
+    time as time_regex,
+)
 
 
 class FormatFunction(Protocol):
-    def __call__(self, sequence: str) -> Any:
-        ...
+    def __call__(self, sequence: str) -> Any: ...
 
 
 def python_types_to_regex(python_type: Type) -> Tuple[Regex, FormatFunction]:
diff --git a/outlines/models/anthropic.py b/outlines/models/anthropic.py
index 830c0cf77..83ea5f229 100644
--- a/outlines/models/anthropic.py
+++ b/outlines/models/anthropic.py
@@ -1,4 +1,5 @@
 """Integration with Anthropic's API."""
+
 from functools import singledispatchmethod
 from typing import Union
 
diff --git a/outlines/models/openai.py b/outlines/models/openai.py
index f082dbc4c..378bb830d 100644
--- a/outlines/models/openai.py
+++ b/outlines/models/openai.py
@@ -1,4 +1,5 @@
 """Integration with OpenAI's API."""
+
 from functools import singledispatchmethod
 from types import NoneType
 from typing import Optional, Union
diff --git a/outlines/processors/structured.py b/outlines/processors/structured.py
index 583fcc98f..8ce69c32a 100644
--- a/outlines/processors/structured.py
+++ b/outlines/processors/structured.py
@@ -23,6 +23,7 @@
 See the License for the specific language governing permissions and
 limitations under the License.
 """
+
 import math
 from typing import TYPE_CHECKING, Any, Dict, List, Optional, Type, Union
 
diff --git a/outlines/samplers.py b/outlines/samplers.py
index 3ab1728fc..3fef673b1 100644
--- a/outlines/samplers.py
+++ b/outlines/samplers.py
@@ -14,8 +14,7 @@ def __call__(
         next_token_logits: "torch.DoubleTensor",
         sequence_weights: "torch.DoubleTensor",
         rng: "torch.Generator",
-    ) -> "torch.DoubleTensor":
-        ...
+    ) -> "torch.DoubleTensor": ...
 
 
 @dataclass(frozen=True)
diff --git a/outlines/serve/serve.py b/outlines/serve/serve.py
index 998fbc459..61d3ed7af 100644
--- a/outlines/serve/serve.py
+++ b/outlines/serve/serve.py
@@ -78,7 +78,8 @@ async def generate(request: Request) -> Response:
         logits_processors = []
 
     sampling_params = SamplingParams(
-        **request_dict, logits_processors=logits_processors  # type: ignore
+        **request_dict,
+        logits_processors=logits_processors,  # type: ignore
     )
     request_id = random_uuid()
 
diff --git a/outlines/types/__init__.py b/outlines/types/__init__.py
index fd69f2193..0788d9dca 100644
--- a/outlines/types/__init__.py
+++ b/outlines/types/__init__.py
@@ -10,7 +10,16 @@
 from typing_extensions import _TypedDictMeta  # type: ignore
 
 from . import airports, countries, locale
-from outlines.types.dsl import Regex, json_schema, one_or_more, optional, regex, repeat, zero_or_more, times
+from outlines.types.dsl import (
+    Regex,
+    json_schema,
+    one_or_more,
+    optional,
+    regex,
+    repeat,
+    zero_or_more,
+    times,
+)
 
 
 # Python types
diff --git a/outlines/types/airports.py b/outlines/types/airports.py
index ec0ef72bd..6e3d011b4 100644
--- a/outlines/types/airports.py
+++ b/outlines/types/airports.py
@@ -1,4 +1,5 @@
 """Generate valid airport codes."""
+
 from enum import Enum
 
 import airportsdata
diff --git a/outlines/types/countries.py b/outlines/types/countries.py
index c612640b4..96be735d3 100644
--- a/outlines/types/countries.py
+++ b/outlines/types/countries.py
@@ -1,4 +1,5 @@
 """Generate valid country codes and names."""
+
 from enum import Enum
 
 from iso3166 import countries
diff --git a/outlines/types/dsl.py b/outlines/types/dsl.py
index 645b0486a..a00f4a639 100644
--- a/outlines/types/dsl.py
+++ b/outlines/types/dsl.py
@@ -69,7 +69,6 @@ def __get_pydantic_core_schema__(
     def __get_pydantic_json_schema__(
         self, core_schema: cs.CoreSchema, handler: GetJsonSchemaHandler
     ) -> JsonSchemaValue:
-
         return {"type": "string", "pattern": to_regex(self)}
 
     def validate(self, value: str) -> str:
diff --git a/tests/generate/test_generate.py b/tests/generate/test_generate.py
index aaa4509bf..64dee6e4b 100644
--- a/tests/generate/test_generate.py
+++ b/tests/generate/test_generate.py
@@ -71,9 +71,7 @@ def model_mamba(tmp_path_factory):
 def model_bart(tmp_path_factory):
     from transformers import AutoModelForSeq2SeqLM
 
-    return models.Transformers(
-        "facebook/bart-base", model_class=AutoModelForSeq2SeqLM
-    )
+    return models.Transformers("facebook/bart-base", model_class=AutoModelForSeq2SeqLM)
 
 
 @pytest.fixture(scope="session")
@@ -281,7 +279,7 @@ def test_generate_json(request, model_fixture, sample_schema):
 
 
 # TODO: add support for genson in the Regex type of v1.0
-#def test_integrate_genson_generate_json(request):
+# def test_integrate_genson_generate_json(request):
 #    from genson import SchemaBuilder
 #
 #    builder = SchemaBuilder()
diff --git a/tests/models/test_transformers.py b/tests/models/test_transformers.py
index 249893ff9..b9f0888f5 100644
--- a/tests/models/test_transformers.py
+++ b/tests/models/test_transformers.py
@@ -40,8 +40,7 @@ def test_transformers_instantiate_mamba():
 
 def test_transformers_instantiate_tokenizer_kwargs():
     model = Transformers(
-        TEST_MODEL,
-        tokenizer_kwargs={"additional_special_tokens": ["<t1>", "<t2>"]}
+        TEST_MODEL, tokenizer_kwargs={"additional_special_tokens": ["<t1>", "<t2>"]}
     )
     assert "<t1>" in model.tokenizer.special_tokens
     assert "<t2>" in model.tokenizer.special_tokens
diff --git a/tests/types/test_to_regex.py b/tests/types/test_to_regex.py
index 6cb566fc5..4b0403ac6 100644
--- a/tests/types/test_to_regex.py
+++ b/tests/types/test_to_regex.py
@@ -1,7 +1,22 @@
 import pytest
 
 
-from outlines.types.dsl import String, Regex, JsonSchema, KleeneStar, KleenePlus, QuantifyBetween, QuantifyExact, QuantifyMaximum, QuantifyMinimum, Sequence, Alternatives, Optional, Term, to_regex
+from outlines.types.dsl import (
+    String,
+    Regex,
+    JsonSchema,
+    KleeneStar,
+    KleenePlus,
+    QuantifyBetween,
+    QuantifyExact,
+    QuantifyMaximum,
+    QuantifyMinimum,
+    Sequence,
+    Alternatives,
+    Optional,
+    Term,
+    to_regex,
+)
 
 
 def test_to_regex_simple():