diff --git a/build.yaml b/build.yaml
index 8d38b6a8358..8d19ed19580 100644
--- a/build.yaml
+++ b/build.yaml
@@ -2453,6 +2453,7 @@ node_modules:
   - src/node/src/client.js
   - src/node/src/common.js
   - src/node/src/credentials.js
+  - src/node/src/grpc_extension.js
   - src/node/src/metadata.js
   - src/node/src/server.js
   name: grpc_node
diff --git a/package.json b/package.json
index 7ab4ea514b5..f9e3384cb10 100644
--- a/package.json
+++ b/package.json
@@ -84,6 +84,7 @@
     "src/node/src/client.js",
     "src/node/src/common.js",
     "src/node/src/credentials.js",
+    "src/node/src/grpc_extension.js",
     "src/node/src/metadata.js",
     "src/node/src/server.js",
     "include/grpc/grpc_security.h",