diff --git a/testing/web-platform/tests/tools/requirements_flake8.txt b/testing/web-platform/tests/tools/requirements_flake8.txt
index e3eb8913e7e4..f8ab816707a8 100644
--- a/testing/web-platform/tests/tools/requirements_flake8.txt
+++ b/testing/web-platform/tests/tools/requirements_flake8.txt
@@ -1,4 +1,4 @@
 flake8==3.9.0
 pycodestyle==2.7.0
-pyflakes==2.3.0
+pyflakes==2.3.1
 pep8-naming==0.11.1