diff --git a/MANIFEST.in b/MANIFEST.in
index 26f9401f2..f00d96fbf 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -17,6 +17,7 @@ graft src
 graft depends
 graft winbuild
 graft docs
+prune Tests
 
 # build/src control detritus
 exclude .appveyor.yml