diff --git a/.github/workflows/python-test-versions.yml b/.github/workflows/python-test-versions.yml
index 7325fbe7..69f80587 100644
--- a/.github/workflows/python-test-versions.yml
+++ b/.github/workflows/python-test-versions.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
         poetry-version: ["1.2.2", "1.3.1"]
 
     steps:
diff --git a/.gitignore b/.gitignore
index eecb143a..3e20b9bd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -212,3 +212,4 @@ pip-selfcheck.json
 
 # Custom rules (everything added below won't be overriden by 'Generate .gitignore File' if you use 'Update' option)
 
+docs/source/_build/
diff --git a/poetry.lock b/poetry.lock
index 08e02788..062153b7 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,9 +1,10 @@
-# This file is automatically @generated by Poetry 1.6.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry and should not be changed by hand.
 
 [[package]]
 name = "aiodns"
 version = "3.1.1"
 description = "Simple DNS resolver for asyncio"
+category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -18,6 +19,7 @@ pycares = ">=4.0.0"
 name = "aiohttp"
 version = "3.9.1"
 description = "Async http client/server framework (asyncio)"
+category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -114,6 +116,7 @@ speedups = ["Brotli", "aiodns", "brotlicffi"]
 name = "aiosignal"
 version = "1.3.1"
 description = "aiosignal: a list of registered asynchronous callbacks"
+category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -128,6 +131,7 @@ frozenlist = ">=1.1.0"
 name = "alabaster"
 version = "0.7.13"
 description = "A configurable sidebar-enabled Sphinx theme"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -139,8 +143,21 @@ files = [
 name = "async-timeout"
 version = "4.0.3"
 description = "Timeout context manager for asyncio programs"
+category = "main"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.6"
+files = [
+    {file = "async-timeout-4.0.2.tar.gz", hash = "sha256:2163e1640ddb52b7a8c80d0a67a08587e5d245cc9c553a74a847056bc2976b15"},
+    {file = "async_timeout-4.0.2-py3-none-any.whl", hash = "sha256:8ca1e4fcf50d07413d66d1a5e416e42cfdf5851c981d679a09851a6853383b3c"},
+]
+
+[[package]]
+name = "atomicwrites"
+version = "1.4.1"
+description = "Atomic file writes."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 files = [
     {file = "async-timeout-4.0.3.tar.gz", hash = "sha256:4640d96be84d82d02ed59ea2b7105a0f7b33abe8703703cd0ab0bf87c427522f"},
     {file = "async_timeout-4.0.3-py3-none-any.whl", hash = "sha256:7405140ff1230c310e51dc27b3145b9092d659ce68ff733fb0cefe3ee42be028"},
@@ -150,6 +167,7 @@ files = [
 name = "attrs"
 version = "22.2.0"
 description = "Classes Without Boilerplate"
+category = "main"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -168,6 +186,7 @@ tests-no-zope = ["cloudpickle", "cloudpickle", "hypothesis", "hypothesis", "mypy
 name = "cachetools"
 version = "5.3.2"
 description = "Extensible memoizing collections and decorators"
+category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -179,6 +198,7 @@ files = [
 name = "cffi"
 version = "1.16.0"
 description = "Foreign Function Interface for Python calling C code."
+category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -243,6 +263,7 @@ pycparser = "*"
 name = "click"
 version = "8.1.7"
 description = "Composable command line interface toolkit"
+category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -257,6 +278,7 @@ colorama = {version = "*", markers = "platform_system == \"Windows\""}
 name = "colorama"
 version = "0.4.6"
 description = "Cross-platform colored terminal text."
+category = "main"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
 files = [
@@ -268,6 +290,7 @@ files = [
 name = "coverage"
 version = "7.3.2"
 description = "Code coverage measurement for Python"
+category = "dev"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -349,6 +372,7 @@ test = ["pytest (>=6)"]
 name = "flake8"
 version = "5.0.4"
 description = "the modular source code checker: pep8 pyflakes and co"
+category = "dev"
 optional = false
 python-versions = ">=3.6.1"
 files = [
@@ -365,6 +389,7 @@ pyflakes = ">=2.5.0,<2.6.0"
 name = "frozenlist"
 version = "1.4.0"
 description = "A list-like structure which implements collections.abc.MutableSequence"
+category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -435,6 +460,7 @@ files = [
 name = "idna"
 version = "3.6"
 description = "Internationalized Domain Names in Applications (IDNA)"
+category = "main"
 optional = false
 python-versions = ">=3.5"
 files = [
@@ -444,8 +470,9 @@ files = [
 
 [[package]]
 name = "iniconfig"
-version = "2.0.0"
-description = "brain-dead simple config-ini parsing"
+version = "1.1.1"
+description = "iniconfig: brain-dead simple config-ini parsing"
+category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -457,6 +484,7 @@ files = [
 name = "isort"
 version = "5.12.0"
 description = "A Python utility / library to sort Python imports."
+category = "dev"
 optional = false
 python-versions = ">=3.8.0"
 files = [
@@ -474,6 +502,7 @@ requirements-deprecated-finder = ["pip-api", "pipreqs"]
 name = "maxminddb"
 version = "2.5.1"
 description = "Reader for the MaxMind DB format"
+category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -534,6 +563,7 @@ setuptools = ">=68.2.2"
 name = "mccabe"
 version = "0.7.0"
 description = "McCabe checker, plugin for flake8"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -545,6 +575,7 @@ files = [
 name = "multidict"
 version = "6.0.4"
 description = "multidict implementation"
+category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -628,6 +659,7 @@ files = [
 name = "packaging"
 version = "23.2"
 description = "Core utilities for Python packages"
+category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -639,6 +671,7 @@ files = [
 name = "pluggy"
 version = "1.3.0"
 description = "plugin and hook calling mechanisms for python"
+category = "dev"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -650,10 +683,23 @@ files = [
 dev = ["pre-commit", "tox"]
 testing = ["pytest", "pytest-benchmark"]
 
+[[package]]
+name = "py"
+version = "1.11.0"
+description = "library with cross-python path, ini-parsing, io, code, log facilities"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+files = [
+    {file = "py-1.11.0-py2.py3-none-any.whl", hash = "sha256:607c53218732647dff4acdfcd50cb62615cedf612e72d1724fb1a0cc6405b378"},
+    {file = "py-1.11.0.tar.gz", hash = "sha256:51c75c4126074b472f746a24399ad32f6053d1b34b68d2fa41e558e6f4a98719"},
+]
+
 [[package]]
 name = "pycares"
 version = "4.4.0"
 description = "Python interface for c-ares"
+category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -720,6 +766,7 @@ idna = ["idna (>=2.1)"]
 name = "pycodestyle"
 version = "2.9.1"
 description = "Python style guide checker"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -731,6 +778,7 @@ files = [
 name = "pycparser"
 version = "2.21"
 description = "C parser in Python"
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 files = [
@@ -742,6 +790,7 @@ files = [
 name = "pyflakes"
 version = "2.5.0"
 description = "passive checker of Python programs"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -749,10 +798,26 @@ files = [
     {file = "pyflakes-2.5.0.tar.gz", hash = "sha256:491feb020dca48ccc562a8c0cbe8df07ee13078df59813b83959cbdada312ea3"},
 ]
 
+[[package]]
+name = "pyparsing"
+version = "3.0.9"
+description = "pyparsing module - Classes and methods to define and execute parsing grammars"
+category = "dev"
+optional = false
+python-versions = ">=3.6.8"
+files = [
+    {file = "pyparsing-3.0.9-py3-none-any.whl", hash = "sha256:5026bae9a10eeaefb61dab2f09052b9f4307d44aee4eda64b309723d8d206bbc"},
+    {file = "pyparsing-3.0.9.tar.gz", hash = "sha256:2b020ecf7d21b687f219b71ecad3631f644a47f01403fa1d1036b0c6416d70fb"},
+]
+
+[package.extras]
+diagrams = ["jinja2", "railroad-diagrams"]
+
 [[package]]
 name = "pytest"
 version = "7.4.3"
 description = "pytest: simple powerful testing with Python"
+category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -775,6 +840,7 @@ testing = ["argcomplete", "attrs (>=19.2.0)", "hypothesis (>=3.56)", "mock", "no
 name = "pytest-asyncio"
 version = "0.19.0"
 description = "Pytest support for asyncio"
+category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -792,6 +858,7 @@ testing = ["coverage (>=6.2)", "flaky (>=3.5.0)", "hypothesis (>=5.7.1)", "mypy
 name = "pytest-cov"
 version = "3.0.0"
 description = "Pytest plugin for measuring coverage."
+category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -810,6 +877,7 @@ testing = ["fields", "hunter", "process-tests", "pytest-xdist", "six", "virtuale
 name = "pytest-flake8"
 version = "1.1.1"
 description = "pytest plugin to check FLAKE8 requirements"
+category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -825,6 +893,7 @@ pytest = ">=7.0"
 name = "pytest-isort"
 version = "3.1.0"
 description = "py.test plugin to check import ordering using isort"
+category = "dev"
 optional = false
 python-versions = ">=3.7,<4"
 files = [
@@ -840,6 +909,7 @@ pytest = ">=5.0"
 name = "pytest-mock"
 version = "3.12.0"
 description = "Thin-wrapper around the mock package for easier use with pytest"
+category = "dev"
 optional = false
 python-versions = ">=3.8"
 files = [
@@ -857,6 +927,7 @@ dev = ["pre-commit", "pytest-asyncio", "tox"]
 name = "pytest-runner"
 version = "6.0.1"
 description = "Invoke py.test as distutils command with dependency resolution"
+category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -888,6 +959,7 @@ testing-integration = ["build[virtualenv] (>=1.0.3)", "filelock (>=3.4.0)", "jar
 name = "tomli"
 version = "2.0.1"
 description = "A lil' TOML parser"
+category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -899,6 +971,7 @@ files = [
 name = "yarl"
 version = "1.9.4"
 description = "Yet another URL library"
+category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1001,4 +1074,4 @@ multidict = ">=4.0"
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "21c9190444e8ce51352c76c3641782ef996ccb001394e4e9b18fcf620c847795"
+content-hash = "0a6fe0ec4eb39d277156e47606d0e0d669cd00c17fbce22cc51f7d87c5011f62"
diff --git a/pyproject.toml b/pyproject.toml
index a67be997..812944ed 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ classifiers = [
 
 [tool.poetry.dependencies]
 python = "^3.8"
-aiohttp = "^3.9.0"
+aiohttp = "3.9.1"
 aiodns = "^3.0.0"
 attrs = "^22.1.0"
 maxminddb = "^2.2.0"
diff --git a/tests/test_resolver.py b/tests/test_resolver.py
index fdfec144..b14eb218 100644
--- a/tests/test_resolver.py
+++ b/tests/test_resolver.py
@@ -1,4 +1,5 @@
 import socket
+from unittest.mock import AsyncMock
 
 import pytest
 
@@ -34,15 +35,12 @@ def test_get_ip_info(resolver):
 @pytest.mark.asyncio
 async def test_get_real_ext_ip(event_loop, mocker, resolver):
     async def f(*args, **kwargs):
-        async def side_effect(*args, **kwargs):
-            return '127.0.0.1\n'
+        return '127.0.0.1\n'
 
-        resp = mocker.Mock()
-        resp.text.side_effect = side_effect
-        return resp
+    resp = AsyncMock()
+    resp.text = f
 
-    # https://github.com/pytest-dev/pytest-mock#note-about-usage-as-context-manager
-    mocker.patch('aiohttp.client.ClientSession._request', side_effect=f)
+    mocker.patch('aiohttp.client.ClientSession._request', return_value=resp)
     assert await resolver.get_real_ext_ip() == '127.0.0.1'