diff --git a/requirements.txt b/requirements.txt
index 8b84730f..6ad675ef 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ binaryornot==0.4.4
 # ------------------------------------------------------------------------------
 black==21.9b0
 isort==5.9.3
-flake8==3.9.2
+flake8==4.0.1
 flake8-isort==4.1.1
 pre-commit==2.15.0
 
diff --git a/{{cookiecutter.project_slug}}/requirements/local.txt b/{{cookiecutter.project_slug}}/requirements/local.txt
index 0451ec9e..10bcbe19 100644
--- a/{{cookiecutter.project_slug}}/requirements/local.txt
+++ b/{{cookiecutter.project_slug}}/requirements/local.txt
@@ -28,7 +28,7 @@ sphinx-autobuild==2021.3.14 # https://github.com/GaretJax/sphinx-autobuild
 
 # Code quality
 # ------------------------------------------------------------------------------
-flake8==3.9.2  # https://github.com/PyCQA/flake8
+flake8==4.0.1  # https://github.com/PyCQA/flake8
 flake8-isort==4.1.1  # https://github.com/gforcada/flake8-isort
 coverage==6.0.2  # https://github.com/nedbat/coveragepy
 black==21.9b0  # https://github.com/psf/black