diff --git a/MANIFEST.in b/MANIFEST.in
index 594ec486..20a0dfff 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -9,4 +9,4 @@ recursive-include pyrolite/data/radii *
 recursive-include pyrolite/data/timescale *
 recursive-include pyrolite/data/testing *
 recursive-include pyrolite/data/_config *
-# global-exclude __pycache__
+global-exclude **/__pycache__/*
diff --git a/pyproject.toml b/pyproject.toml
index b828f009..50cf3109 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,8 @@ dependencies = [
 ]
 
 [tool.setuptools.packages]
-find = {}
+find = { exclude = ['test*', "docs*"] } # "**/__pycache__/*"
+#  include = ["Aitchison/*.py"],
 
 [tool.setuptools.dynamic]
 readme = { file = "README.md" }