diff --git a/.devcontainer/requirements.txt b/.devcontainer/requirements.txt
index 849122a2..fc4050b2 100644
--- a/.devcontainer/requirements.txt
+++ b/.devcontainer/requirements.txt
@@ -5,7 +5,7 @@ beautifulsoup4==4.9.3
 black==20.8b1
 codecov==2.1.11
 doc8==0.8.1
-flake8==3.8.4
+flake8==3.9.0
 flake8-docstrings==1.5.0
 isort==5.7.0
 mypy==0.812