diff --git a/python-dask.spec b/python-dask.spec
index af5b56a..8ff7121 100644
--- a/python-dask.spec
+++ b/python-dask.spec
@@ -152,6 +152,8 @@ rm -rf html/.{doctrees,buildinfo}
 
 %install
 %pyproject_install
+# we do not want to ship test files
+find %{buildroot}%{python3_sitelib}/%{srcname} -type d -name tests -print0 | xargs -0 rm -rf
 
 %pyproject_save_files %{srcname}