diff --git a/pyproject.toml b/pyproject.toml
index 89fff1f79..afacfddd6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,11 +11,10 @@ dependencies = ["numpy>=1.21"]
 
 [project.optional-dependencies]
 docs = ["markdown", "pylit3", "pyyaml", "sphinx==5.0.2", "sphinx_rtd_theme"]
-lint = ["flake8", "pydocstyle"]
+lint = ["flake8", "pydocstyle", "isort"]
 optional = ["numba", "fenics-ufl@git+https://github.com/fenics/ufl"]
 test = ["pytest", "sympy", "scipy", "matplotlib", "fenics-basix[optional]"]
-ci = ["mypy", "pytest-xdist", "fenics-basix[docs]", "fenics-basix[lint]",
-      "fenics-basix[optional]", "fenics-basix[test]"]
+ci = ["mypy", "pytest-xdist", "fenics-basix[docs,lint,test,optional]"]
 
 [tool.pytest.ini_options]
 testpaths = ["test"]
diff --git a/python/setup.py b/python/setup.py
index 43c6df160..b29855350 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -89,8 +89,7 @@ def build_extension(self, ext):
           "lint": ["flake8", "pydocstyle", "isort"],
           "optional": ["numba", "fenics-ufl@git+https://github.com/fenics/ufl"],
           "test": ["pytest", "sympy", "scipy", "matplotlib", "fenics-basix[optional]"],
-          "ci": ["mypy", "pytest-xdist", "fenics-basix[docs]", "fenics-basix[lint]", "fenics-basix[optional]",
-                 "fenics-basix[test]"]
+          "ci": ["mypy", "pytest-xdist", "fenics-basix[docs,lint,test,optional]"],
       },
       ext_modules=[CMakeExtension('basix._basixcpp')],
       cmdclass=dict(build_ext=CMakeBuild),