diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index 0d4fad3..2aa72b0 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -16,7 +16,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install -e .[tests]
+        pip install -flake8 pytest
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names
diff --git a/pyproject.toml b/pyproject.toml
index 2987d19..07d8273 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -68,3 +68,16 @@ source = ["moderngl_window"]
 [build-system]
 requires = ["setuptools", "wheel"]
 build-backend = "setuptools.build_meta"
+
+[tool.flake8]
+ignore = [
+    "W503",
+    "C901",
+]
+max-complexity = 10
+max-line-length = 120
+exclude = [
+    "tests/",
+    "docs/",
+    "temp/",
+]