diff --git a/.gitignore b/.gitignore
index c0461ec..aa471ab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,3 +26,4 @@ pip-log.txt
 *.wpr
 .pypirc
 rdatasets/_version.py
+.eggs
diff --git a/MANIFEST.in b/MANIFEST.in
index 3dec71f..f297c3f 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -10,8 +10,10 @@ exclude .gitignore
 exclude .gitmodules
 exclude .pre-commit-config.yaml
 exclude .flake8
-recursive-exclude */__pycache__
+recursive-exclude * __pycache__
 recursive-exclude * *.py[co]
 prune rdatasets_orig/
+prune .github
+prune examples
 exclude convertCSVtoPickle.py
 exclude convertHTMLtoPickle.py
diff --git a/pyproject.toml b/pyproject.toml
index 27a1899..aadc95a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,11 +3,10 @@
 requires = ["setuptools >=61", "setuptools_scm[toml]>=6.2"]
 build-backend = "setuptools.build_meta"
 
-[tool.setuptools]
-include-package-data = true
-
 [tool.setuptools.packages.find]
 where = ["rdatasets"]
+include = ["_data"]
+namespaces = false
 
 [tool.setuptools.package-data]
 "*" = ["*.compress", "*.pickle"]