diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9368812..ed92ac4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,4 +27,4 @@ jobs:
           key: ${{ runner.os }}-${{ hashFiles('poetry.lock') }}
     strategy:
       matrix:
-        toxenv: [py37, py38, py39, py310]
+        toxenv: [py37, py38, py39, py310, py311, py312]
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index d24e855..9b7c6bb 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,31 +1,23 @@
 repos:
-  - repo: https://github.com/psf/black
-    rev: 23.3.0
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.3.2
     hooks:
-      - id: black
-        language_version: python3
+      - id: ruff-format
 
-  - repo: https://github.com/pycqa/flake8
-    rev: 6.0.0
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.3.2
     hooks:
-      - id: flake8
-        language_version: python3
-
-  - repo: https://github.com/pycqa/isort
-    rev: 5.12.0
-    hooks:
-      - id: isort
-        # extra dependencies for config in pyproject.toml
-        additional_dependencies: [".[pyproject]"]
+      - id: ruff
+        args: ["--fix", "--exit-non-zero-on-fix", "--config", "pyproject.toml"]
 
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.4.0
+    rev: v4.5.0
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
       - id: debug-statements
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.4.0
+    rev: v1.9.0
     hooks:
       - id: mypy
diff --git a/structlog_sentry/__init__.py b/structlog_sentry/__init__.py
index 925ea81..02a68a1 100644
--- a/structlog_sentry/__init__.py
+++ b/structlog_sentry/__init__.py
@@ -3,7 +3,8 @@
 import logging
 import sys
 from fnmatch import fnmatch
-from typing import Any, Iterable, Optional
+from typing import Any, Optional
+from collections.abc import MutableMapping, Iterable
 
 from sentry_sdk import Hub
 from sentry_sdk.integrations.logging import _IGNORED_LOGGERS
@@ -83,7 +84,9 @@ def __init__(
             self._ignored_loggers.update(set(ignore_loggers))
 
     @staticmethod
-    def _get_logger_name(logger: WrappedLogger, event_dict: dict) -> Optional[str]:
+    def _get_logger_name(
+        logger: WrappedLogger, event_dict: MutableMapping[str, Any]
+    ) -> Optional[str]:
         """Get logger name from event_dict with a fallbacks to logger.name and
         record.name
 
@@ -116,9 +119,11 @@ def _get_event_and_hint(self, event_dict: EventDict) -> tuple[dict, dict]:
         has_exc_info = exc_info and exc_info != (None, None, None)
 
         if has_exc_info:
+            client = self._get_hub().client
+            options: dict[str, Any] = client.options if client else {}
             event, hint = event_from_exception(
                 exc_info,
-                client_options=self._get_hub().client.options,
+                client_options=options,
             )
         else:
             event, hint = {}, {}
@@ -197,7 +202,7 @@ def __call__(
         self, logger: WrappedLogger, name: str, event_dict: EventDict
     ) -> EventDict:
         """A middleware to process structlog `event_dict` and send it to Sentry."""
-        self._original_event_dict = event_dict.copy()
+        self._original_event_dict = dict(event_dict)
         sentry_skip = event_dict.pop("sentry_skip", False)
 
         if self.active and not sentry_skip and self._can_record(logger, event_dict):
diff --git a/tox.ini b/tox.ini
index f699dc8..edaa251 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 envlist =
   lint
-  py{37,38,39,310}
+  py{37,38,39,310,311,312}
 isolated_build = true
 
 [testenv]