diff --git a/poetry.lock b/poetry.lock
index 548f11e..d2109b5 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -187,7 +187,7 @@ pycodestyle = "*"
 
 [[package]]
 name = "flake8-bugbear"
-version = "21.3.2"
+version = "21.4.3"
 description = "A plugin for flake8 finding likely bugs and design problems in your program. Contains warnings that don't belong in pyflakes and pycodestyle."
 category = "dev"
 optional = false
@@ -695,7 +695,7 @@ testing = ["pytest (>=3.5,!=3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6.1"
-content-hash = "fd122b540f846aa5ff78438e7f18dd9aa8c454d047cb6d4d517b0a14215cd2c5"
+content-hash = "970f75b0a7c0980ebf630a3bc41c40b4594aad1d7d19918f57fcdc3299309586"
 
 [metadata.files]
 appdirs = [
@@ -796,8 +796,8 @@ flake8-bandit = [
     {file = "flake8_bandit-2.1.2.tar.gz", hash = "sha256:687fc8da2e4a239b206af2e54a90093572a60d0954f3054e23690739b0b0de3b"},
 ]
 flake8-bugbear = [
-    {file = "flake8-bugbear-21.3.2.tar.gz", hash = "sha256:cadce434ceef96463b45a7c3000f23527c04ea4b531d16c7ac8886051f516ca0"},
-    {file = "flake8_bugbear-21.3.2-py36.py37.py38-none-any.whl", hash = "sha256:5d6ccb0c0676c738a6e066b4d50589c408dcc1c5bf1d73b464b18b73cd6c05c2"},
+    {file = "flake8-bugbear-21.4.3.tar.gz", hash = "sha256:2346c81f889955b39e4a368eb7d508de723d9de05716c287dc860a4073dc57e7"},
+    {file = "flake8_bugbear-21.4.3-py36.py37.py38-none-any.whl", hash = "sha256:4f305dca96be62bf732a218fe6f1825472a621d3452c5b994d8f89dae21dbafa"},
 ]
 flake8-polyfill = [
     {file = "flake8-polyfill-1.0.2.tar.gz", hash = "sha256:e44b087597f6da52ec6393a709e7108b2905317d0c0b744cdca6208e670d8eda"},
diff --git a/pyproject.toml b/pyproject.toml
index 43e48ea..e52e375 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ networkx = "^2.5"
 dlint = "^0.11.0"
 flake8 = "^3.8.4"
 flake8-bandit = "^2.1.2"
-flake8-bugbear = "^21.3.2"
+flake8-bugbear = "^21.4.3"
 placebo = "^0.9.0"
 pylint = "^2.7.2"
 pytest-black = "^0.3.12"