diff --git a/requirements/dev.txt b/requirements/dev.txt
index accdec42214..1e3351ef194 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -81,7 +81,7 @@ filelock==3.0.12
     #   virtualenv
 flake8-pyi==20.10.0
     # via -r requirements/lint.txt
-flake8==3.9.0
+flake8==3.9.1
     # via
     #   -r requirements/lint.txt
     #   flake8-pyi
diff --git a/requirements/lint.in b/requirements/lint.in
index 47f82cd5053..2ceb1e0a483 100644
--- a/requirements/lint.in
+++ b/requirements/lint.in
@@ -1,5 +1,5 @@
 black==20.8b1; implementation_name=="cpython"
-flake8==3.9.0
+flake8==3.9.1
 flake8-pyi==20.10.0
 isort==5.8.0
 mypy==0.790; implementation_name=="cpython"
diff --git a/requirements/lint.txt b/requirements/lint.txt
index d551f848e68..72b17666664 100644
--- a/requirements/lint.txt
+++ b/requirements/lint.txt
@@ -24,7 +24,7 @@ filelock==3.0.12
     # via virtualenv
 flake8-pyi==20.10.0
     # via -r requirements/lint.in
-flake8==3.9.0
+flake8==3.9.1
     # via
     #   -r requirements/lint.in
     #   flake8-pyi