diff --git a/poetry.lock b/poetry.lock
index e96c2b4b..f3a23d69 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -207,7 +207,7 @@ python-versions = "*"
 
 [[package]]
 name = "flake8"
-version = "3.9.0"
+version = "3.9.1"
 description = "the modular source code checker: pep8 pyflakes and co"
 category = "dev"
 optional = false
@@ -961,7 +961,7 @@ testing = ["pytest (>=3.5,!=3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7.0"
-content-hash = "caed8593fd4b5caa966794a9cd62ce7b8b60ded2ce65aafe42513f9e28b9efe0"
+content-hash = "5faa4539080f1c5eecd6c353cd5917d97d02d791e7e0f971244f825e6debb762"
 
 [metadata.files]
 alabaster = [
@@ -1094,8 +1094,8 @@ filelock = [
     {file = "filelock-3.0.12.tar.gz", hash = "sha256:18d82244ee114f543149c66a6e0c14e9c4f8a1044b5cdaadd0f82159d6a6ff59"},
 ]
 flake8 = [
-    {file = "flake8-3.9.0-py2.py3-none-any.whl", hash = "sha256:12d05ab02614b6aee8df7c36b97d1a3b2372761222b19b58621355e82acddcff"},
-    {file = "flake8-3.9.0.tar.gz", hash = "sha256:78873e372b12b093da7b5e5ed302e8ad9e988b38b063b61ad937f26ca58fc5f0"},
+    {file = "flake8-3.9.1-py2.py3-none-any.whl", hash = "sha256:3b9f848952dddccf635be78098ca75010f073bfe14d2c6bda867154bea728d2a"},
+    {file = "flake8-3.9.1.tar.gz", hash = "sha256:1aa8990be1e689d96c745c5682b687ea49f2e05a443aff1f8251092b0014e378"},
 ]
 flake8-bandit = [
     {file = "flake8_bandit-2.1.2.tar.gz", hash = "sha256:687fc8da2e4a239b206af2e54a90093572a60d0954f3054e23690739b0b0de3b"},
diff --git a/pyproject.toml b/pyproject.toml
index f1825b2b..8307fd7f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ xdoctest = {extras = ["colors"], version = "^0.15.0"}
 sphinx = "^3.5.2"
 sphinx-autobuild = "^2021.3.14"
 pre-commit = "^2.11.1"
-flake8 = "^3.9.0"
+flake8 = "^3.9.1"
 black = "^20.8b1"
 flake8-bandit = "^2.1.2"
 flake8-bugbear = "^20.1.4"