diff --git a/setup.cfg b/setup.cfg
index 9ccdf350..e7290db2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -36,10 +36,11 @@ install_requires =
     zarr_checksum
 zip_safe = False
 packages = find_namespace:
-include_package_data = True
+include_package_data = False
 
 [options.packages.find]
 include = dandischema*
+exclude = *tests*
 
 [options.extras_require]
 # I bet will come handy