diff --git a/.flake8 b/.flake8
index 3ba454a9d5..a37d4d5db5 100644
--- a/.flake8
+++ b/.flake8
@@ -10,7 +10,7 @@ ignore =
     # ambiguous variable name, e.g. 'l'
     E741,
     # Various codes from flake8-docstrings we don't care for
-    D1,D205,D209,D213,D400,D401,D402,D412,D413,D999,D202,
+    D1,D205,D209,D213,D301,D400,D401,D402,D412,D413,D999,D202,
     # flake8-bugbear options we disagree with
     B008,B011,
     # flake8-bandit security warnings we disagree with or don't mind
diff --git a/hypothesis-python/tests/cover/test_type_lookup_forward_ref.py b/hypothesis-python/tests/cover/test_type_lookup_forward_ref.py
index 47a7303762..105e7c5084 100644
--- a/hypothesis-python/tests/cover/test_type_lookup_forward_ref.py
+++ b/hypothesis-python/tests/cover/test_type_lookup_forward_ref.py
@@ -104,7 +104,7 @@ def test_bound_alias_forward_ref(built):
 # Dot access:
 
 _CorrectDotAccess = TypeVar("_CorrectDotAccess", bound="utils.ExcInfo")
-_WrongDotAccess = TypeVar("_WrongDotAccess", bound="wrong.ExcInfo")
+_WrongDotAccess = TypeVar("_WrongDotAccess", bound="wrong.ExcInfo")  # noqa
 _MissingDotAccess = TypeVar("_MissingDotAccess", bound="utils.MissingType")
 
 
@@ -137,7 +137,7 @@ def test_bound_missing_dot_access_forward_ref(function):
 
 # Missing:
 
-_Missing = TypeVar("_Missing", bound="MissingType")
+_Missing = TypeVar("_Missing", bound="MissingType")  # noqa
 
 
 def missing_fun(thing: _Missing) -> int:
diff --git a/requirements/tools.txt b/requirements/tools.txt
index 0f95343591..41b30b16ed 100644
--- a/requirements/tools.txt
+++ b/requirements/tools.txt
@@ -78,15 +78,15 @@ flake8-bandit==2.1.2
     # via -r requirements/tools.in
 flake8-bugbear==21.3.2
     # via -r requirements/tools.in
-flake8-comprehensions==3.3.1
+flake8-comprehensions==3.4.0
     # via -r requirements/tools.in
-flake8-docstrings==1.5.0
+flake8-docstrings==1.6.0
     # via -r requirements/tools.in
 flake8-mutable==1.2.0
     # via -r requirements/tools.in
 flake8-polyfill==1.0.2
     # via flake8-bandit
-flake8==3.8.4
+flake8==3.9.0
     # via
     #   -r requirements/tools.in
     #   flake8-2020
@@ -104,6 +104,10 @@ idna==2.10
     # via requests
 imagesize==1.2.0
     # via sphinx
+importlib-metadata==3.7.3
+    # via
+    #   keyring
+    #   twine
 iniconfig==1.1.1
     # via pytest
 ipython-genutils==0.2.0
@@ -120,7 +124,7 @@ jeepney==0.6.0
     #   secretstorage
 jinja2==2.11.3
     # via sphinx
-keyring==22.3.0
+keyring==23.0.0
     # via twine
 lark-parser==0.11.2
     # via -r requirements/tools.in
@@ -152,11 +156,13 @@ pathspec==0.8.1
     # via black
 pbr==5.5.1
     # via stevedore
+pep517==0.10.0
+    # via pip-tools
 pexpect==4.8.0
     # via ipython
 pickleshare==0.7.5
     # via ipython
-pip-tools==6.0.0
+pip-tools==6.0.1
     # via -r requirements/tools.in
 pkginfo==1.7.0
     # via twine
@@ -174,17 +180,17 @@ py==1.10.0
     #   tox
 pybetter==0.3.6.1
     # via shed
-pycodestyle==2.6.0
+pycodestyle==2.7.0
     # via
     #   flake8
     #   flake8-bandit
 pycparser==2.20
     # via cffi
-pydocstyle==5.1.1
+pydocstyle==6.0.0
     # via flake8-docstrings
 pyemojify==0.2.0
     # via pybetter
-pyflakes==2.2.0
+pyflakes==2.3.0
     # via
     #   autoflake
     #   flake8
@@ -204,7 +210,7 @@ pytz==2021.1
     # via
     #   babel
     #   django
-pyupgrade==2.10.0
+pyupgrade==2.11.0
     # via shed
 pyyaml==5.4.1
     # via
@@ -212,7 +218,7 @@ pyyaml==5.4.1
     #   libcst
 readme-renderer==29.0
     # via twine
-regex==2020.11.13
+regex==2021.3.17
     # via black
 requests-toolbelt==0.9.1
     # via twine
@@ -228,7 +234,7 @@ rfc3986==1.4.0
     # via twine
 secretstorage==3.3.1
     # via keyring
-shed==0.3.2
+shed==0.3.3
     # via -r requirements/tools.in
 six==1.15.0
     # via
@@ -253,7 +259,7 @@ sphinx-rtd-theme==0.5.1
     # via -r requirements/tools.in
 sphinx-selective-exclude==1.0.3
     # via -r requirements/tools.in
-sphinx==3.5.2
+sphinx==3.5.3
     # via
     #   -r requirements/tools.in
     #   sphinx-rtd-theme
@@ -279,6 +285,7 @@ toml==0.10.2
     # via
     #   -r requirements/tools.in
     #   black
+    #   pep517
     #   pytest
     #   tox
 tox==3.23.0
@@ -289,7 +296,7 @@ traitlets==4.3.3
     # via
     #   -r requirements/tools.in
     #   ipython
-twine==3.3.0
+twine==3.4.1
     # via -r requirements/tools.in
 typed-ast==1.4.2
     # via
@@ -303,14 +310,16 @@ typing-extensions==3.7.4.3
     #   typing-inspect
 typing-inspect==0.6.0
     # via libcst
-urllib3==1.26.3
+urllib3==1.26.4
     # via requests
-virtualenv==20.4.2
+virtualenv==20.4.3
     # via tox
 wcwidth==0.2.5
     # via prompt-toolkit
 webencodings==0.5.1
     # via bleach
+zipp==3.4.1
+    # via importlib-metadata
 
 # The following packages are considered to be unsafe in a requirements file:
 # pip