diff --git a/pyproject.toml b/pyproject.toml
index 2e20934cd7..8a3475432c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -100,9 +100,10 @@ build-backend = 'setuptools.build_meta'
 [tool.setuptools_scm]
 
 [tool.setuptools]
-packages = ['jwst', 'pytest_crds']
 zip-safe = false
 
+[tool.setuptools.packages.find]
+
 [tool.setuptools.package-data]
 # package_data values are glob patterns relative to each specific subpackage.
 '*' = [