diff --git a/src/signals/path-matchers.ts b/src/signals/path-matchers.ts
index da30bd1e84..7fdc27c673 100644
--- a/src/signals/path-matchers.ts
+++ b/src/signals/path-matchers.ts
@@ -74,6 +74,9 @@ function isGeneratedFileFrom(parts: NormalizedPath): boolean {
     /_pb\.nim$/.test(norm) ||
     // Lua protobuf: message stubs are `*_pb.lua`.
     /_pb\.lua$/.test(norm) ||
+    // JavaScript/TypeScript grpc-node protobuf: message stubs are `*_pb.{js,ts}`; gRPC emits
+    // sibling `*_grpc_pb.{js,ts}` service stubs (underscore form, not `.pb.js`).
+    /_pb\.(js|ts)$/.test(norm) ||
     // Dart codegen: build_runner (`.g.dart`), freezed (`.freezed.dart`), and
     // retrofit/injectable (`.gr.dart`) all emit generated part files.
     /\.(g|freezed|gr)\.dart$/.test(norm) ||
diff --git a/test/unit/path-matchers.test.ts b/test/unit/path-matchers.test.ts
index c4d4c3c27c..2be934735e 100644
--- a/test/unit/path-matchers.test.ts
+++ b/test/unit/path-matchers.test.ts
@@ -144,6 +144,17 @@ describe("isGeneratedFile", () => {
     expect(classifyChangedFile("gen/GreeterGrpcKt.kt")).toBe("generated");
   });
 
+  it("matches JavaScript and TypeScript grpc-node protobuf stubs alongside the other protoc plugins", () => {
+    expect(isGeneratedFile("gen/service_pb.js")).toBe(true);
+    expect(isGeneratedFile("gen/service_grpc_pb.js")).toBe(true);
+    expect(isGeneratedFile("gen/service_pb.ts")).toBe(true);
+    expect(isGeneratedFile("gen/service_grpc_pb.ts")).toBe(true);
+    expect(isGeneratedFile("src/app.js")).toBe(false);
+    expect(isGeneratedFile("src/app.ts")).toBe(false);
+    expect(classifyChangedFile("gen/service_grpc_pb.js")).toBe("generated");
+    expect(classifyChangedFile("gen/service_pb.ts")).toBe("generated");
+  });
+
   it("matches Swift protobuf, Dart freezed/retrofit, C# designer/XAML, and Objective-C protoc output", () => {
     for (const path of [
       "proto/messages.pb.swift",
@@ -474,6 +485,8 @@ describe("classifyChangedFile", () => {
       ["gen/service_pb.nim", "generated"],
       ["gen/service_pb.lua", "generated"],
       ["gen/GreeterGrpcKt.kt", "generated"],
+      ["gen/service_grpc_pb.js", "generated"],
+      ["gen/service_pb.ts", "generated"],
       ["vendor/lib.go", "vendored"],
       ["package-lock.json", "lockfile"],
       ["bun.lock", "lockfile"],