diff --git a/requirements-test.txt b/requirements-test.txt
index e7ea6c5..22c15de 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -3,5 +3,5 @@ pytest-cov==2.11.*
 pytest-vcr==1.0.*
 black==20.8b1
 isort==5.7.*
-flake8==3.8.*
+flake8==3.9.*
 mypy==0.790