diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index bd6b1a8..0000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1,5 +0,0 @@
-include versioneer.py
-include transforms3d/_version.py
-include setup.cfg
-include README.rst
-recursive-include transforms3d/tests/data *
diff --git a/pyproject.toml b/pyproject.toml
index 9debcdb..4a6ef99 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,6 +33,12 @@ dependencies = [
     "numpy >=1.15",
 ]
 
+[tool.setuptools.packages.find]
+include = ["transforms3d*"]
+
+[tool.setuptools.package-data]
+"transforms3d.tests" = ["data/*"]
+
 [project.urls]
 Homepage = "http://github.com/matthew-brett/transforms3d"
 
diff --git a/setup.py b/setup.py
index 0ceeadf..9b17a43 100755
--- a/setup.py
+++ b/setup.py
@@ -11,10 +11,5 @@
 setup(name='transforms3d',
       version=versioneer.get_version(),
       cmdclass=versioneer.get_cmdclass(),
-      packages=['transforms3d',
-                'transforms3d.derivations',
-                'transforms3d.tests'],
-      package_data = {'transforms3d':
-                      [pjoin('tests', 'data', '*')]},
       zip_safe=False,
       )