diff --git a/PYTHON-MANIFEST.in b/PYTHON-MANIFEST.in
index b30a1fbf906..c0de5289ee2 100644
--- a/PYTHON-MANIFEST.in
+++ b/PYTHON-MANIFEST.in
@@ -9,6 +9,7 @@ graft third_party/boringssl
 graft third_party/cares
 graft third_party/nanopb
 graft third_party/zlib
+include src/python/grpcio/_parallel_compile_patch.py
 include src/python/grpcio/_spawn_patch.py
 include src/python/grpcio/commands.py
 include src/python/grpcio/grpc_version.py
diff --git a/tools/distrib/python/grpcio_tools/MANIFEST.in b/tools/distrib/python/grpcio_tools/MANIFEST.in
index 11ce367747a..4943751879e 100644
--- a/tools/distrib/python/grpcio_tools/MANIFEST.in
+++ b/tools/distrib/python/grpcio_tools/MANIFEST.in
@@ -1,3 +1,4 @@
+include _parallel_compile_patch.py
 include grpc_version.py
 include protoc_deps.py
 include protoc_lib_deps.py