diff --git a/MANIFEST.in b/MANIFEST.in
index 23a2789e..cad821dd 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,2 +1,4 @@
-recursive-include tests *
-prune tests/__pycache__
+graft tests
+global-exclude *.py[cod]
+prune __pycache__
+prune */__pycache__