diff --git a/setup.cfg b/setup.cfg
index e9d15df..bf96f2a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -39,7 +39,7 @@ tests_require =
     pytest==5.2.3
     pytest-cov==2.6.0
     pytest-pythonpath==0.7.3
-    flake8==3.7.8
+    flake8==4.0.1
     pep8==1.7.1
     pyflakes==2.0.0
     pytest-flake8==1.0.2
@@ -56,7 +56,7 @@ develop =
     pytest==5.2.3
     pytest-cov==2.7.1
     pytest-pythonpath==0.7.3
-    flake8==3.7.7
+    flake8==4.0.1
     pep8==1.7.1
     pytest-flake8==1.0.4
     pytest-pep8==1.0.6