diff --git a/MANIFEST.in b/MANIFEST.in
index 5ebcb7781..a762b7500 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -2,4 +2,6 @@ graft vendor/Heap-Layers
 prune vendor/Heap-Layers/.git
 graft vendor/printf
 prune vendor/printf/.git
+graft vendor/crdp
+prune vendor/crdp/.git
 exclude scalene/old/*