diff --git a/pyproject.toml b/pyproject.toml
index 97f6728..d283910 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,8 +2,8 @@
     requires = ["setuptools", "setuptools-scm"]
     build-backend = "setuptools.build_meta"
 
-[tool.setuptools]
-    py-modules = [ "island" ]
+[tool.setuptools.packages.find]
+where = ["."]
 
 [project]
     name = "island"