diff --git a/poetry.lock b/poetry.lock
index 898c1f0..da06b01 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -22,45 +22,6 @@ files = [
     {file = "async_generator-1.8.zip", hash = "sha256:928b644cfc92be498f2d6c431e0082ae79ea736fbdf1ce4247881071dd525348"},
 ]
 
-[[package]]
-name = "asynctest"
-version = "0.13.0"
-description = "Enhance the standard unittest package with features for testing asyncio libraries"
-optional = false
-python-versions = ">=3.5"
-files = [
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-]
-
-[[package]]
-name = "atomicwrites"
-version = "1.4.1"
-description = "Atomic file writes."
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-files = [
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-]
-
-[[package]]
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-version = "23.1.0"
-description = "Classes Without Boilerplate"
-optional = false
-python-versions = ">=3.7"
-files = [
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-]
-
-[package.extras]
-cov = ["attrs[tests]", "coverage[toml] (>=5.3)"]
-dev = ["attrs[docs,tests]", "pre-commit"]
-docs = ["furo", "myst-parser", "sphinx", "sphinx-notfound-page", "sphinxcontrib-towncrier", "towncrier", "zope-interface"]
-tests = ["attrs[tests-no-zope]", "zope-interface"]
-tests-no-zope = ["cloudpickle", "hypothesis", "mypy (>=1.1.1)", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "pytest-xdist[psutil]"]
-
 [[package]]
 name = "babel"
 version = "2.13.1"
@@ -299,45 +260,71 @@ development = ["black", "flake8", "mypy", "pytest", "types-colorama"]
 
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 name = "coverage"
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+version = "7.3.2"
 description = "Code coverage measurement for Python"
 optional = false
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+    {file = "coverage-7.3.2-cp39-cp39-win_amd64.whl", hash = "sha256:b4767da59464bb593c07afceaddea61b154136300881844768037fd5e859353f"},
+    {file = "coverage-7.3.2-pp38.pp39.pp310-none-any.whl", hash = "sha256:ae97af89f0fbf373400970c0a21eef5aa941ffeed90aee43650b81f7d7f47637"},
+    {file = "coverage-7.3.2.tar.gz", hash = "sha256:be32ad29341b0170e795ca590e1c07e81fc061cb5b10c74ce7203491484404ef"},
 ]
 
+[package.dependencies]
+tomli = {version = "*", optional = true, markers = "python_full_version <= \"3.11.0a6\" and extra == \"toml\""}
+
+[package.extras]
+toml = ["tomli"]
+
 [[package]]
 name = "docutils"
 version = "0.17.1"
@@ -349,6 +336,20 @@ files = [
     {file = "docutils-0.17.1.tar.gz", hash = "sha256:686577d2e4c32380bb50cbb22f575ed742d58168cee37e99117a854bcd88f125"},
 ]
 
+[[package]]
+name = "exceptiongroup"
+version = "1.1.3"
+description = "Backport of PEP 654 (exception groups)"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "exceptiongroup-1.1.3-py3-none-any.whl", hash = "sha256:343280667a4585d195ca1cf9cef84a4e178c4b6cf2274caef9859782b567d5e3"},
+    {file = "exceptiongroup-1.1.3.tar.gz", hash = "sha256:097acd85d473d75af5bb98e41b61ff7fe35efe6675e4f9370ec6ec5126d160e9"},
+]
+
+[package.extras]
+test = ["pytest (>=6)"]
+
 [[package]]
 name = "idna"
 version = "3.4"
@@ -371,6 +372,17 @@ files = [
     {file = "imagesize-1.4.1.tar.gz", hash = "sha256:69150444affb9cb0d5cc5a92b3676f0b2fb7cd9ae39e947a5e11a36b4497cd4a"},
 ]
 
+[[package]]
+name = "iniconfig"
+version = "2.0.0"
+description = "brain-dead simple config-ini parsing"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "iniconfig-2.0.0-py3-none-any.whl", hash = "sha256:b6a85871a79d2e3b22d2d1b94ac2824226a63c6b741c88f7ae975f18b6778374"},
+    {file = "iniconfig-2.0.0.tar.gz", hash = "sha256:2d91e135bf72d31a410b17c16da610a82cb55f6b0477d1a902134b24a455b8b3"},
+]
+
 [[package]]
 name = "isort"
 version = "4.3.21"
@@ -474,17 +486,6 @@ files = [
     {file = "MarkupSafe-2.1.3.tar.gz", hash = "sha256:af598ed32d6ae86f1b747b82783958b1a4ab8f617b06fe68795c7f026abbdcad"},
 ]
 
-[[package]]
-name = "more-itertools"
-version = "10.1.0"
-description = "More routines for operating on iterables, beyond itertools"
-optional = false
-python-versions = ">=3.8"
-files = [
-    {file = "more-itertools-10.1.0.tar.gz", hash = "sha256:626c369fa0eb37bac0291bce8259b332fd59ac792fa5497b59837309cd5b114a"},
-    {file = "more_itertools-10.1.0-py3-none-any.whl", hash = "sha256:64e0735fcfdc6f3464ea133afe8ea4483b1c5fe3a3d69852e6503b43a0b222e6"},
-]
-
 [[package]]
 name = "packaging"
 version = "23.2"
@@ -509,28 +510,18 @@ files = [
 
 [[package]]
 name = "pluggy"
-version = "0.13.1"
+version = "1.3.0"
 description = "plugin and hook calling mechanisms for python"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=3.8"
 files = [
-    {file = "pluggy-0.13.1-py2.py3-none-any.whl", hash = "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"},
-    {file = "pluggy-0.13.1.tar.gz", hash = "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0"},
+    {file = "pluggy-1.3.0-py3-none-any.whl", hash = "sha256:d89c696a773f8bd377d18e5ecda92b7a3793cbe66c87060a6fb58c7b6e1061f7"},
+    {file = "pluggy-1.3.0.tar.gz", hash = "sha256:cf61ae8f126ac6f7c451172cf30e3e43d3ca77615509771b3a984a0730651e12"},
 ]
 
 [package.extras]
 dev = ["pre-commit", "tox"]
-
-[[package]]
-name = "py"
-version = "1.11.0"
-description = "library with cross-python path, ini-parsing, io, code, log facilities"
-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"},
-]
+testing = ["pytest", "pytest-benchmark"]
 
 [[package]]
 name = "pycparser"
@@ -603,80 +594,78 @@ tests = ["pytest"]
 
 [[package]]
 name = "pytest"
-version = "4.6.11"
+version = "7.4.3"
 description = "pytest: simple powerful testing with Python"
 optional = false
-python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+python-versions = ">=3.7"
 files = [
-    {file = "pytest-4.6.11-py2.py3-none-any.whl", hash = "sha256:a00a7d79cbbdfa9d21e7d0298392a8dd4123316bfac545075e6f8f24c94d8c97"},
-    {file = "pytest-4.6.11.tar.gz", hash = "sha256:50fa82392f2120cc3ec2ca0a75ee615be4c479e66669789771f1758332be4353"},
+    {file = "pytest-7.4.3-py3-none-any.whl", hash = "sha256:0d009c083ea859a71b76adf7c1d502e4bc170b80a8ef002da5806527b9591fac"},
+    {file = "pytest-7.4.3.tar.gz", hash = "sha256:d989d136982de4e3b29dabcc838ad581c64e8ed52c11fbe86ddebd9da0818cd5"},
 ]
 
 [package.dependencies]
-atomicwrites = ">=1.0"
-attrs = ">=17.4.0"
-colorama = {version = "*", markers = "sys_platform == \"win32\" and python_version != \"3.4\""}
-more-itertools = {version = ">=4.0.0", markers = "python_version > \"2.7\""}
+colorama = {version = "*", markers = "sys_platform == \"win32\""}
+exceptiongroup = {version = ">=1.0.0rc8", markers = "python_version < \"3.11\""}
+iniconfig = "*"
 packaging = "*"
-pluggy = ">=0.12,<1.0"
-py = ">=1.5.0"
-six = ">=1.10.0"
-wcwidth = "*"
+pluggy = ">=0.12,<2.0"
+tomli = {version = ">=1.0.0", markers = "python_version < \"3.11\""}
 
 [package.extras]
-testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests"]
+testing = ["argcomplete", "attrs (>=19.2.0)", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "setuptools", "xmlschema"]
 
 [[package]]
 name = "pytest-asyncio"
-version = "0.10.0"
-description = "Pytest support for asyncio."
+version = "0.21.1"
+description = "Pytest support for asyncio"
 optional = false
-python-versions = ">= 3.5"
+python-versions = ">=3.7"
 files = [
-    {file = "pytest-asyncio-0.10.0.tar.gz", hash = "sha256:9fac5100fd716cbecf6ef89233e8590a4ad61d729d1732e0a96b84182df1daaf"},
-    {file = "pytest_asyncio-0.10.0-py3-none-any.whl", hash = "sha256:d734718e25cfc32d2bf78d346e99d33724deeba774cc4afdf491530c6184b63b"},
+    {file = "pytest-asyncio-0.21.1.tar.gz", hash = "sha256:40a7eae6dded22c7b604986855ea48400ab15b069ae38116e8c01238e9eeb64d"},
+    {file = "pytest_asyncio-0.21.1-py3-none-any.whl", hash = "sha256:8666c1c8ac02631d7c51ba282e0c69a8a452b211ffedf2599099845da5c5c37b"},
 ]
 
 [package.dependencies]
-pytest = ">=3.0.6"
+pytest = ">=7.0.0"
 
 [package.extras]
-testing = ["async-generator (>=1.3)", "coverage", "hypothesis (>=3.64)"]
+docs = ["sphinx (>=5.3)", "sphinx-rtd-theme (>=1.0)"]
+testing = ["coverage (>=6.2)", "flaky (>=3.5.0)", "hypothesis (>=5.7.1)", "mypy (>=0.931)", "pytest-trio (>=0.7.0)"]
 
 [[package]]
 name = "pytest-cov"
-version = "2.10.1"
+version = "4.1.0"
 description = "Pytest plugin for measuring coverage."
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = ">=3.7"
 files = [
-    {file = "pytest-cov-2.10.1.tar.gz", hash = "sha256:47bd0ce14056fdd79f93e1713f88fad7bdcc583dcd7783da86ef2f085a0bb88e"},
-    {file = "pytest_cov-2.10.1-py2.py3-none-any.whl", hash = "sha256:45ec2d5182f89a81fc3eb29e3d1ed3113b9e9a873bcddb2a71faaab066110191"},
+    {file = "pytest-cov-4.1.0.tar.gz", hash = "sha256:3904b13dfbfec47f003b8e77fd5b589cd11904a21ddf1ab38a64f204d6a10ef6"},
+    {file = "pytest_cov-4.1.0-py3-none-any.whl", hash = "sha256:6ba70b9e97e69fcc3fb45bfeab2d0a138fb65c4d0d6a41ef33983ad114be8c3a"},
 ]
 
 [package.dependencies]
-coverage = ">=4.4"
+coverage = {version = ">=5.2.1", extras = ["toml"]}
 pytest = ">=4.6"
 
 [package.extras]
-testing = ["fields", "hunter", "process-tests (==2.0.2)", "pytest-xdist", "six", "virtualenv"]
+testing = ["fields", "hunter", "process-tests", "pytest-xdist", "six", "virtualenv"]
 
 [[package]]
 name = "pytest-mock"
-version = "1.10.4"
-description = "Thin-wrapper around the mock package for easier use with py.test"
+version = "3.12.0"
+description = "Thin-wrapper around the mock package for easier use with pytest"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=3.8"
 files = [
-    {file = "pytest-mock-1.10.4.tar.gz", hash = "sha256:5bf5771b1db93beac965a7347dc81c675ec4090cb841e49d9d34637a25c30568"},
-    {file = "pytest_mock-1.10.4-py2.py3-none-any.whl", hash = "sha256:43ce4e9dd5074993e7c021bb1c22cbb5363e612a2b5a76bc6d956775b10758b7"},
+    {file = "pytest-mock-3.12.0.tar.gz", hash = "sha256:31a40f038c22cad32287bb43932054451ff5583ff094bca6f675df2f8bc1a6e9"},
+    {file = "pytest_mock-3.12.0-py3-none-any.whl", hash = "sha256:0972719a7263072da3a21c7f4773069bcc7486027d7e8e1f81d98a47e701bc4f"},
 ]
 
 [package.dependencies]
-pytest = ">=2.7"
+pytest = ">=5.0"
 
 [package.extras]
-dev = ["pre-commit", "tox"]
+dev = ["pre-commit", "pytest-asyncio", "tox"]
 
 [[package]]
 name = "pyyaml"
@@ -925,6 +914,17 @@ files = [
     {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
 ]
 
+[[package]]
+name = "tomli"
+version = "2.0.1"
+description = "A lil' TOML parser"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "tomli-2.0.1-py3-none-any.whl", hash = "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc"},
+    {file = "tomli-2.0.1.tar.gz", hash = "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"},
+]
+
 [[package]]
 name = "urllib3"
 version = "2.0.7"
@@ -942,18 +942,7 @@ secure = ["certifi", "cryptography (>=1.9)", "idna (>=2.0.0)", "pyopenssl (>=17.
 socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
 zstd = ["zstandard (>=0.18.0)"]
 
-[[package]]
-name = "wcwidth"
-version = "0.2.9"
-description = "Measures the displayed width of unicode strings in a terminal"
-optional = false
-python-versions = "*"
-files = [
-    {file = "wcwidth-0.2.9-py2.py3-none-any.whl", hash = "sha256:9a929bd8380f6cd9571a968a9c8f4353ca58d7cd812a4822bba831f8d685b223"},
-    {file = "wcwidth-0.2.9.tar.gz", hash = "sha256:a675d1a4a2d24ef67096a04b85b02deeecd8e226f57b5e3a72dbb9ed99d27da8"},
-]
-
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9"
-content-hash = "d079b6c7324f848fa9515696492f6ddef2afd7f9a676c18fb2124832b56e014f"
+content-hash = "2c9dc701c55baa39681c4962dee79afed2bb760b0c26a10049c413711eaaf629"
diff --git a/pyproject.toml b/pyproject.toml
index 3d6cf9f..1b55525 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,20 +17,28 @@ colorlog = "^6.7.0"
 
 [tool.poetry.group.dev.dependencies]
 check-manifest = "^0.39"
-coverage = "^4.5.3"
+coverage = "^7.3.2"
 isort = "^4.3.20"
 pep257 = "^0.7.0"
-pytest-cov = "^2.7.1"
-pytest = "^4.6.3"
-pytest-asyncio = "0.10.0"
-asynctest = "0.13.0"
-pytest-mock = "1.10.4"
+pytest = "^7.4.3"
+pytest-asyncio = "^0.21.1"
+pytest-cov = "^4.1.0"
+pytest-mock = "^3.12.0"
 
 [tool.poetry.group.docs.dependencies]
 Sphinx = "^2.1.1"
 
+[tool.coverage.run]
+branch = true
+
+[tool.coverage.report]
+show_missing = true
+skip_covered = true
+fail_under = 70
+omit = ["examples/*"]
+
 [tool.pytest.ini_options]
-addopts = ["--cov", "ssb", "--cov-report", "term-missing", "--no-cov-on-fail"]
+addopts = ["--cov=.", "--no-cov-on-fail"]
 python_files = ["ssb/tests/test_*.py"]
 
 [build-system]
diff --git a/ssb/tests/test_packet_stream.py b/ssb/tests/test_packet_stream.py
index 02ccd0e..33f4b71 100644
--- a/ssb/tests/test_packet_stream.py
+++ b/ssb/tests/test_packet_stream.py
@@ -2,7 +2,6 @@ import json
 from asyncio import ensure_future, gather, Event
 
 import pytest
-from asynctest import patch
 from nacl.signing import SigningKey
 
 from secret_handshake.network import SHSDuplexStream
@@ -185,17 +184,19 @@ async def test_message_stream(ps_client, mocker):
     assert ps.req_counter == 2
     assert ps.register_handler.call_count == 1
     handler = list(ps._event_map.values())[0][1]
+    mock_process = mocker.AsyncMock()
 
-    with patch.object(handler, 'process') as mock_process:
-        ps_client.feed([b'\n\x00\x00\x02\xc5\xff\xff\xff\xff', MSG_BODY_1])
-        msg = await ps.read()
-        assert mock_process.call_count == 1
+    mocker.patch.object(handler, 'process', mock_process)
 
-        # responses have negative req
-        assert msg.req == -1
-        assert msg.body['previous'] == '%KTGP6W8vF80McRAZHYDWuKOD0KlNyKSq6Gb42iuV7Iw=.sha256'
+    ps_client.feed([b'\n\x00\x00\x02\xc5\xff\xff\xff\xff', MSG_BODY_1])
+    msg = await ps.read()
+    assert mock_process.await_count == 1
 
-        assert ps.req_counter == 2
+    # responses have negative req
+    assert msg.req == -1
+    assert msg.body['previous'] == '%KTGP6W8vF80McRAZHYDWuKOD0KlNyKSq6Gb42iuV7Iw=.sha256'
+
+    assert ps.req_counter == 2
 
     stream_handler = ps.send({
         'name': ['createHistoryStream'],
@@ -212,21 +213,21 @@ async def test_message_stream(ps_client, mocker):
     assert ps.register_handler.call_count == 2
     handler = list(ps._event_map.values())[1][1]
 
-    with patch.object(handler, 'process', wraps=handler.process) as mock_process:
-        ps_client.feed([b'\n\x00\x00\x02\xc5\xff\xff\xff\xfe', MSG_BODY_1,
-                        b'\x0e\x00\x00\x023\xff\xff\xff\xfe', MSG_BODY_2])
+    mock_process = mocker.patch.object(handler, 'process', wraps=handler.process)
+    ps_client.feed([b'\n\x00\x00\x02\xc5\xff\xff\xff\xfe', MSG_BODY_1,
+                    b'\x0e\x00\x00\x023\xff\xff\xff\xfe', MSG_BODY_2])
 
-        # execute both message polling and response handling loops
-        collected, handled = await gather(_collect_messages(ps), _collect_messages(stream_handler))
+    # execute both message polling and response handling loops
+    collected, handled = await gather(_collect_messages(ps), _collect_messages(stream_handler))
 
-        # No messages collected, since they're all responses
-        assert collected == []
+    # No messages collected, since they're all responses
+    assert collected == []
 
-        assert mock_process.call_count == 2
+    assert mock_process.call_count == 2
 
-        for msg in handled:
-            # responses have negative req
-            assert msg.req == -2
+    for msg in handled:
+        # responses have negative req
+        assert msg.req == -2
 
 
 @pytest.mark.asyncio
@@ -249,14 +250,15 @@ async def test_message_request(ps_server, mocker):
     assert ps.req_counter == 2
     assert ps.register_handler.call_count == 1
     handler = list(ps._event_map.values())[0][1]
+    mock_process = mocker.AsyncMock()
 
-    with patch.object(handler, 'process') as mock_process:
-        ps_server.feed([b'\x02\x00\x00\x00>\xff\xff\xff\xff',
-                        b'{"id":"@1+Iwm79DKvVBqYKFkhT6fWRbAVvNNVH4F2BSxwhYmx8=.ed25519"}'])
-        msg = await ps.read()
-        assert mock_process.call_count == 1
+    mocker.patch.object(handler, 'process', mock_process)
+    ps_server.feed([b'\x02\x00\x00\x00>\xff\xff\xff\xff',
+                    b'{"id":"@1+Iwm79DKvVBqYKFkhT6fWRbAVvNNVH4F2BSxwhYmx8=.ed25519"}'])
+    msg = await ps.read()
+    assert mock_process.await_count == 1
 
-        # responses have negative req
-        assert msg.req == -1
-        assert msg.body['id'] == '@1+Iwm79DKvVBqYKFkhT6fWRbAVvNNVH4F2BSxwhYmx8=.ed25519'
-        assert ps.req_counter == 2
+    # responses have negative req
+    assert msg.req == -1
+    assert msg.body['id'] == '@1+Iwm79DKvVBqYKFkhT6fWRbAVvNNVH4F2BSxwhYmx8=.ed25519'
+    assert ps.req_counter == 2