diff --git a/requirements_test.txt b/requirements_test.txt
index 10c838a424..f811626cc5 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,5 +1,5 @@
 pylint==2.7.2
-flake8==3.8.4
+flake8==3.9.0
 black==20.8b1
 pillow>4.0.0
 cryptography>=2.0.0,<4