diff --git a/src/index.d.ts b/src/index.d.ts
index 2a4abe1..c6fcf0f 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -41,6 +41,7 @@ declare namespace NodeBle {
         getRSSI(): Promise<string>;
         getManufacturerData(): Promise<{[key:string]:any}>;
         getAdvertisingData(): Promise<{[key:string]:any}>;
+        getServiceData(): Promise<{[key:string]:any}>;
         isPaired(): Promise<string>;
         isConnected(): Promise<string>;
         pair(): Promise<void>;