diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f68e351..e215822 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -53,7 +53,7 @@ jobs:
         python -m unittest discover --verbose --start-directory tests
     - name: run flake8
       run:
-        python -m flake8 .
+        python -m flake8 -extend-exclude "cgi.py" .
     - name: run black
       run:
         black --check --diff .