diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index da1ad1a..c63ca1e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -29,7 +29,7 @@ jobs:
         run: pip install .
 
       - name: Lint with Flake8
-        run: flake8 .
+        run: flake8 --max-line-length=120 .
 
       - name: Run unit tests
         run: coverage run --source tes -m pytest -W ignore::DeprecationWarning