diff --git a/types/cote/cote-tests.ts b/types/cote/cote-tests.ts
index 1851654625..d4af3ce95e 100644
--- a/types/cote/cote-tests.ts
+++ b/types/cote/cote-tests.ts
@@ -35,6 +35,7 @@ class Readme {
         });
 
         const req = {
+            __subset: 'subset',
             type: 'randomRequest',
             payload: {
                 val: Math.floor(Math.random() * 10)
@@ -52,7 +53,8 @@ class Readme {
             name: 'Random Responder',
             namespace: 'rnd',
             key: 'a certain key',
-            respondsTo: ['randomRequest']
+            respondsTo: ['randomRequest'],
+            subset: 'subset'
         });
 
         interface RandomRequest {
diff --git a/types/cote/index.d.ts b/types/cote/index.d.ts
index 4c959af76b..93f5b7d63f 100644
--- a/types/cote/index.d.ts
+++ b/types/cote/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for cote 0.17
+// Type definitions for cote 0.19
 // Project: https://github.com/dashersw/cote#readme
 // Definitions by: makepost <https://github.com/makepost>
 //                 Labat Robin <https://github.com/roblabat>
@@ -115,6 +115,11 @@ export interface ResponderAdvertisement extends Advertisement {
      * Request types that a Responder can listen to.
      */
     respondsTo?: string[];
+
+    /**
+     * Advertisement attribute that lets you target a subgroup of responders using the __subset property of a request.
+     */
+    subset?: string;
 }
 
 export class Publisher extends Component {