diff --git a/Makefile b/Makefile
index 44528e01..3191f435 100644
--- a/Makefile
+++ b/Makefile
@@ -39,7 +39,6 @@ docs:
 	$(MAKE) -C ./docs
 
 fmt:
-	$(PYTHON) -m autoflake --remove-all-unused-imports --in-place --recursive .
 	$(PYTHON) -m ruff check --fix
 	$(PYTHON) -m ruff format .
 
diff --git a/pyproject.toml b/pyproject.toml
index 58860fa0..a2989b6b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ docstring-code-format = true
 docstring-code-line-length = "dynamic"
 
 [tool.ruff.lint]
-select = ["D", "I"]
+select = ["D", "F401", "I"]
 ignore = [
     # NumPy style docstring convention with noted exceptions.
     # https://docs.astral.sh/ruff/faq/#does-ruff-support-numpy-or-google-style-docstrings
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 53d32846..10ceed65 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,7 +1,5 @@
-autoflake
 build
 coverage
-isort
 mypy
 pandas
 pre-commit