diff --git a/integration/grpc-js-use-date-false/grpc-js-use-date-false.ts b/integration/grpc-js-use-date-false/grpc-js-use-date-false.ts
index 6191ec2fd..577ebe509 100644
--- a/integration/grpc-js-use-date-false/grpc-js-use-date-false.ts
+++ b/integration/grpc-js-use-date-false/grpc-js-use-date-false.ts
@@ -136,6 +136,7 @@ export interface TestClient extends Client {
 export const TestClient = makeGenericClientConstructor(TestService, "simple.Test") as unknown as {
   new (address: string, credentials: ChannelCredentials, options?: Partial<ClientOptions>): TestClient;
   service: typeof TestService;
+  serviceName: string;
 };
 
 type Builtin = Date | Function | Uint8Array | string | number | boolean | undefined;
diff --git a/integration/grpc-js-use-date-string/grpc-js-use-date-string.ts b/integration/grpc-js-use-date-string/grpc-js-use-date-string.ts
index dc19a1e7c..b0c924dc9 100644
--- a/integration/grpc-js-use-date-string/grpc-js-use-date-string.ts
+++ b/integration/grpc-js-use-date-string/grpc-js-use-date-string.ts
@@ -134,6 +134,7 @@ export interface TestClient extends Client {
 export const TestClient = makeGenericClientConstructor(TestService, "simple.Test") as unknown as {
   new (address: string, credentials: ChannelCredentials, options?: Partial<ClientOptions>): TestClient;
   service: typeof TestService;
+  serviceName: string;
 };
 
 type Builtin = Date | Function | Uint8Array | string | number | boolean | undefined;
diff --git a/integration/grpc-js-use-date-true/grpc-js-use-date-true.ts b/integration/grpc-js-use-date-true/grpc-js-use-date-true.ts
index 29d456ab3..c21eac1a8 100644
--- a/integration/grpc-js-use-date-true/grpc-js-use-date-true.ts
+++ b/integration/grpc-js-use-date-true/grpc-js-use-date-true.ts
@@ -134,6 +134,7 @@ export interface TestClient extends Client {
 export const TestClient = makeGenericClientConstructor(TestService, "simple.Test") as unknown as {
   new (address: string, credentials: ChannelCredentials, options?: Partial<ClientOptions>): TestClient;
   service: typeof TestService;
+  serviceName: string;
 };
 
 type Builtin = Date | Function | Uint8Array | string | number | boolean | undefined;
diff --git a/integration/grpc-js/simple.ts b/integration/grpc-js/simple.ts
index e2f422c36..353610cf6 100644
--- a/integration/grpc-js/simple.ts
+++ b/integration/grpc-js/simple.ts
@@ -631,6 +631,7 @@ export interface TestClient extends Client {
 export const TestClient = makeGenericClientConstructor(TestService, "simple.Test") as unknown as {
   new (address: string, credentials: ChannelCredentials, options?: Partial<ClientOptions>): TestClient;
   service: typeof TestService;
+  serviceName: string;
 };
 
 type Builtin = Date | Function | Uint8Array | string | number | boolean | undefined;
diff --git a/src/generate-grpc-js.ts b/src/generate-grpc-js.ts
index d702b1843..ea6e3c8fa 100644
--- a/src/generate-grpc-js.ts
+++ b/src/generate-grpc-js.ts
@@ -238,6 +238,7 @@ function generateClientConstructor(fileDesc: FileDescriptorProto, serviceDesc: S
         options?: Partial<${ClientOptions}>,
       ): ${serviceDesc.name}Client;
       service: typeof ${serviceDesc.name}Service;
+      serviceName: string;
     }
   `;
 }