diff --git a/mirth_client/models.py b/mirth_client/models.py
index 0c713b9..7e63eba 100644
--- a/mirth_client/models.py
+++ b/mirth_client/models.py
@@ -21,15 +21,32 @@
 from uuid import UUID
 
 import xmltodict
-from pydantic import (
-    BaseModel,
-    Protocol,
-    StrBytes,
-    ValidationError,
-    root_validator,
-    validator,
-)
-from pydantic.error_wrappers import ErrorWrapper
+import typing
+import pydantic
+from packaging import version
+
+if typing.TYPE_CHECKING or version.parse(pydantic.__version__) >= version.parse("2.0"):
+    from pydantic.v1 import (
+        BaseModel,
+        ValidationError,
+        root_validator,
+        validator,
+        StrBytes,
+        Protocol,
+    )
+    from pydantic.v1.error_wrappers import ErrorWrapper
+else:
+    from pydantic import (
+        BaseModel,
+        Protocol,
+        StrBytes,
+        ValidationError,
+        root_validator,
+        validator,
+    )
+    from pydantic.error_wrappers import ErrorWrapper
+
+
 from typing_extensions import TypedDict
 
 if TYPE_CHECKING:
@@ -181,7 +198,7 @@ def parse_raw(  # pylint: disable=arguments-differ
         *,
         content_type: Optional[str] = "xml",
         encoding: str = "utf8",
-        proto: Protocol = None,
+        proto: Optional[Protocol] = None,
         allow_pickle: bool = False,
     ) -> "Model":
         """Parse raw data into a Pydantic object.
@@ -214,17 +231,17 @@ def parse_raw(  # pylint: disable=arguments-differ
             raise ValidationError([ErrorWrapper(e, loc="__obj__")], cls) from e
         return super().parse_raw(  # type: ignore
             b,
-            content_type=content_type,
+            content_type=content_type,  # type: ignore
             encoding=encoding,
-            proto=proto,
+            proto=proto,  # type: ignore
             allow_pickle=allow_pickle,
         )
 
     def xml(
         self,
         *,
-        include: Union["SetIntStr", "DictIntStrAny"] = None,
-        exclude: Union["SetIntStr", "DictIntStrAny"] = None,
+        include: Union["SetIntStr", "DictIntStrAny", None] = None,
+        exclude: Union["SetIntStr", "DictIntStrAny", None] = None,
         by_alias: bool = True,
         exclude_unset: bool = False,
     ) -> str:
diff --git a/pyproject.toml b/pyproject.toml
index 128216b..8f1aefb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,11 +6,11 @@ packages = [
   {include = "mirth_client"},
 ]
 readme = "README.md"
-version = "3.2.0"
+version = "4.1.0"
 
 [tool.poetry.dependencies]
 Sphinx = {version = ">=3.5.3,<6.0.0", optional = true}
-httpx = ">=0.23,<0.25"
+httpx = ">=0.23,<0.28.1"
 pydantic = ">=1.8.2,<3.0.0"
 python = "^3.9"
 semver = ">=2.13,<4.0"
@@ -21,17 +21,16 @@ xmltodict = ">=0.12,<0.14"
 [tool.poetry.extras]
 docs = ["Sphinx", "sphinx-rtd-theme"]
 
-[tool.poetry.dev-dependencies]
-bandit = "^1.7.0" 
-black = "^23.3" 
+[tool.poetry.group.dev.dependencies]
+bandit = "^1.7.0"
 importlib-metadata = "<7" # Workaround for https://github.com/PyCQA/bandit/issues/951
 isort = "^5.7.0" 
-lxml = "^5.2.2"
-mypy = "^1.1" 
-pylint = "^2.8.2" 
+lxml = "^5.2.2" 
+mypy = "^1.1"
 pytest = "^7.0.0" 
 pytest-cov = "^4.0.0" 
-tox = "^3.23.0" 
+tox = "^3.23.0"
+ruff = "^0.12.0"
 
 [build-system]
 build-backend = "poetry.core.masonry.api"
diff --git a/tests/_get_examples.py b/tests/_get_examples.py
index cc51377..279c43c 100644
--- a/tests/_get_examples.py
+++ b/tests/_get_examples.py
@@ -31,7 +31,6 @@
 
 for path in paths.values():
     for method in path.keys():
-
         # Response examples
         response_examples_xml = (
             path.get(method)
diff --git a/tests/test_models/test_get_event_list.py b/tests/test_models/test_get_event_list.py
index 0885fd5..abf477c 100644
--- a/tests/test_models/test_get_event_list.py
+++ b/tests/test_models/test_get_event_list.py
@@ -1,6 +1,5 @@
 import datetime
 from pathlib import Path
-from uuid import UUID
 from mirth_client.models import EventList
 
 EVENT_LIST_RESPONSE = (
diff --git a/tox.ini b/tox.ini
index f0afcd8..045ab98 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,15 +1,14 @@
 [tox]
 isolated_build = true
-envlist = black, mypy, pylint, bandit
+envlist = ruff-format, mypy, pytest, ruff-lint, bandit
 
 [testenv]
-whitelist_externals = poetry
-commands =
-    poetry install -v
+allowlist_externals = poetry
+commands = poetry install -v --with dev
 
-[testenv:black]
-description = 'Check code style with Black'
-commands = poetry run black . --check
+[testenv:ruff-format]
+description = 'Check code style with ruff'
+commands = poetry run ruff format . --check
 
 [testenv:pytest]
 description = 'Run Python tests with pytest test runner.'
@@ -19,9 +18,9 @@ commands = poetry run pytest --cov=mirth_client --cov-report term-missing --cov-
 description = 'Execute static analysis with mypy (type annotations).'
 commands = poetry run mypy mirth_client/
 
-[testenv:pylint]
-description = 'Execute static analysis with pylint.'
-commands = poetry run pylint mirth_client/
+[testenv:ruff-lint]
+description = 'Execute static analysis with ruff.'
+commands = poetry run ruff check mirth_client/
 
 [testenv:bandit]
 description = 'Execute static analysis with bandit.'