diff --git a/pyproject.toml b/pyproject.toml
index 4f4fed6..3131305 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 requires = [
     "cython<3",
     "numpy",
-    "setuptools",
+    "setuptools>=61.0",
 ]
 
 [project]
@@ -22,3 +22,17 @@ classifiers = [
 dependencies = [
     "numpy",
 ]
+
+[tool.setuptools]
+packages = [
+    "pyquante2",
+    "pyquante2.basis",
+    "pyquante2.dft",
+    "pyquante2.geo",
+    "pyquante2.graphics",
+    "pyquante2.grid",
+    "pyquante2.ints",
+    "pyquante2.pt",
+    "pyquante2.scf",
+    "pyquante2.viewer",
+]
diff --git a/setup.py b/setup.py
index ea3dd18..aec62a1 100644
--- a/setup.py
+++ b/setup.py
@@ -58,18 +58,5 @@
 
 setup(
     name="pyquante2",
-    install_requires=["numpy"],
-    packages=[
-        "pyquante2",
-        "pyquante2.basis",
-        "pyquante2.dft",
-        "pyquante2.geo",
-        "pyquante2.graphics",
-        "pyquante2.grid",
-        "pyquante2.ints",
-        "pyquante2.pt",
-        "pyquante2.scf",
-        "pyquante2.viewer",
-    ],
     ext_modules=ext_modules,
 )