diff --git a/changelog.d/14431.misc b/changelog.d/14431.misc
new file mode 100644
index 000000000..15b6d4f2e
--- /dev/null
+++ b/changelog.d/14431.misc
@@ -0,0 +1 @@
+Bump flake8 from 4.0.1 to 5.0.4.
diff --git a/poetry.lock b/poetry.lock
index fb6125def..ff8c43238 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -246,17 +246,17 @@ dev = ["Sphinx", "coverage", "flake8", "lxml", "memory-profiler", "mypy (==0.910
 
 [[package]]
 name = "flake8"
-version = "4.0.1"
+version = "5.0.4"
 description = "the modular source code checker: pep8 pyflakes and co"
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.6.1"
 
 [package.dependencies]
-importlib-metadata = {version = "<4.3", markers = "python_version < \"3.8\""}
-mccabe = ">=0.6.0,<0.7.0"
-pycodestyle = ">=2.8.0,<2.9.0"
-pyflakes = ">=2.4.0,<2.5.0"
+importlib-metadata = {version = ">=1.1.0,<4.3", markers = "python_version < \"3.8\""}
+mccabe = ">=0.7.0,<0.8.0"
+pycodestyle = ">=2.9.0,<2.10.0"
+pyflakes = ">=2.5.0,<2.6.0"
 
 [[package]]
 name = "flake8-bugbear"
@@ -555,11 +555,11 @@ dev = ["black (==22.3.0)", "flake8 (==4.0.1)", "isort (==5.9.3)", "ldaptor", "ma
 
 [[package]]
 name = "mccabe"
-version = "0.6.1"
+version = "0.7.0"
 description = "McCabe checker, plugin for flake8"
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "msgpack"
@@ -775,11 +775,11 @@ pyasn1 = ">=0.4.6,<0.5.0"
 
 [[package]]
 name = "pycodestyle"
-version = "2.8.0"
+version = "2.9.1"
 description = "Python style guide checker"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "pycparser"
@@ -806,11 +806,11 @@ email = ["email-validator (>=1.0.3)"]
 
 [[package]]
 name = "pyflakes"
-version = "2.4.0"
+version = "2.5.0"
 description = "passive checker of Python programs"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "pygithub"
@@ -1831,8 +1831,8 @@ elementpath = [
     {file = "elementpath-2.5.0.tar.gz", hash = "sha256:3a27aaf3399929fccda013899cb76d3ff111734abf4281e5f9d3721ba0b9ffa3"},
 ]
 flake8 = [
-    {file = "flake8-4.0.1-py2.py3-none-any.whl", hash = "sha256:479b1304f72536a55948cb40a32dce8bb0ffe3501e26eaf292c7e60eb5e0428d"},
-    {file = "flake8-4.0.1.tar.gz", hash = "sha256:806e034dda44114815e23c16ef92f95c91e4c71100ff52813adf7132a6ad870d"},
+    {file = "flake8-5.0.4-py2.py3-none-any.whl", hash = "sha256:7a1cf6b73744f5806ab95e526f6f0d8c01c66d7bbe349562d22dfca20610b248"},
+    {file = "flake8-5.0.4.tar.gz", hash = "sha256:6fbe320aad8d6b95cec8b8e47bc933004678dc63095be98528b7bdd2a9f510db"},
 ]
 flake8-bugbear = [
     {file = "flake8-bugbear-22.10.27.tar.gz", hash = "sha256:a6708608965c9e0de5fff13904fed82e0ba21ac929fe4896459226a797e11cd5"},
@@ -2146,8 +2146,8 @@ matrix-synapse-ldap3 = [
     {file = "matrix_synapse_ldap3-0.2.2-py3-none-any.whl", hash = "sha256:66ee4c85d7952c6c27fd04c09cdfdf4847b8e8b7d6a7ada6ba1100013bda060f"},
 ]
 mccabe = [
-    {file = "mccabe-0.6.1-py2.py3-none-any.whl", hash = "sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42"},
-    {file = "mccabe-0.6.1.tar.gz", hash = "sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"},
+    {file = "mccabe-0.7.0-py2.py3-none-any.whl", hash = "sha256:6c2d30ab6be0e4a46919781807b4f0d834ebdd6c6e3dca0bda5a15f863427b6e"},
+    {file = "mccabe-0.7.0.tar.gz", hash = "sha256:348e0240c33b60bbdf4e523192ef919f28cb2c3d7d5c7794f74009290f236325"},
 ]
 msgpack = [
     {file = "msgpack-1.0.4-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:4ab251d229d10498e9a2f3b1e68ef64cb393394ec477e3370c457f9430ce9250"},
@@ -2369,8 +2369,8 @@ pyasn1-modules = [
     {file = "pyasn1_modules-0.2.8-py2.py3-none-any.whl", hash = "sha256:a50b808ffeb97cb3601dd25981f6b016cbb3d31fbf57a8b8a87428e6158d0c74"},
 ]
 pycodestyle = [
-    {file = "pycodestyle-2.8.0-py2.py3-none-any.whl", hash = "sha256:720f8b39dde8b293825e7ff02c475f3077124006db4f440dcbc9a20b76548a20"},
-    {file = "pycodestyle-2.8.0.tar.gz", hash = "sha256:eddd5847ef438ea1c7870ca7eb78a9d47ce0cdb4851a5523949f2601d0cbbe7f"},
+    {file = "pycodestyle-2.9.1-py2.py3-none-any.whl", hash = "sha256:d1735fc58b418fd7c5f658d28d943854f8a849b01a5d0a1e6f3f3fdd0166804b"},
+    {file = "pycodestyle-2.9.1.tar.gz", hash = "sha256:2c9607871d58c76354b697b42f5d57e1ada7d261c261efac224b664affdc5785"},
 ]
 pycparser = [
     {file = "pycparser-2.21-py2.py3-none-any.whl", hash = "sha256:8ee45429555515e1f6b185e78100aea234072576aa43ab53aefcae078162fca9"},
@@ -2415,8 +2415,8 @@ pydantic = [
     {file = "pydantic-1.10.2.tar.gz", hash = "sha256:91b8e218852ef6007c2b98cd861601c6a09f1aa32bbbb74fab5b1c33d4a1e410"},
 ]
 pyflakes = [
-    {file = "pyflakes-2.4.0-py2.py3-none-any.whl", hash = "sha256:3bb3a3f256f4b7968c9c788781e4ff07dce46bdf12339dcda61053375426ee2e"},
-    {file = "pyflakes-2.4.0.tar.gz", hash = "sha256:05a85c2872edf37a4ed30b0cce2f6093e1d0581f8c19d7393122da7e25b2b24c"},
+    {file = "pyflakes-2.5.0-py2.py3-none-any.whl", hash = "sha256:4579f67d887f804e67edb544428f264b7b24f435b263c4614f384135cea553d2"},
+    {file = "pyflakes-2.5.0.tar.gz", hash = "sha256:491feb020dca48ccc562a8c0cbe8df07ee13078df59813b83959cbdada312ea3"},
 ]
 pygithub = [
     {file = "PyGithub-1.56-py3-none-any.whl", hash = "sha256:d15f13d82165306da8a68aefc0f848a6f6432d5febbff13b60a94758ce3ef8b5"},