diff --git a/MANIFEST.in b/MANIFEST.in
index c055e89731b..dcf77186a3a 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -8,6 +8,7 @@ graft weave/integrations
 graft weave/legacy
 graft weave/trace
 graft weave/trace_server
+graft weave/type_serializers
 global-exclude */__pycache__/*
 global-exclude *.pyc
 global-exclude */cassettes/*