diff --git a/dev-environment.yml b/dev-environment.yml
index 6e07727..e4b8fe9 100644
--- a/dev-environment.yml
+++ b/dev-environment.yml
@@ -27,6 +27,7 @@ dependencies:
   - build
   - black
   - flake8
+  - flake8-pyproject
   - isort
   - pre-commit
   - pyflakes
diff --git a/pyproject.toml b/pyproject.toml
index 86b7aed..2ec4d8e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -74,5 +74,13 @@ include-package-data = false
 where = ["src"]
 namespaces = false
 
+# Thanks to Flake8-pyproject, we can configure flake8 here!
+[tool.flake8]
+exclude = ["bin", "build", "docs", "dist"]
+extend-ignore = ["E203"]
+# See https://black.readthedocs.io/en/stable/guides/using_black_with_other_tools.html#flake8
+max-line-length = 88
+min_python_version = "3.8"
+
 [tool.isort]
 profile = "black"
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 376f6df..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,6 +0,0 @@
-# TODO: Move all configuration into pyproject.toml
-#
-[flake8]
-# See https://black.readthedocs.io/en/stable/guides/using_black_with_other_tools.html#flake8
-max-line-length = 88
-extend-ignore = E203