diff --git a/plugins/stack-overflow-backend/config.d.ts b/plugins/stack-overflow-backend/config.d.ts
index 7e7211ca33..3ce37f3396 100644
--- a/plugins/stack-overflow-backend/config.d.ts
+++ b/plugins/stack-overflow-backend/config.d.ts
@@ -24,5 +24,11 @@ export interface Config {
      * @visibility backend
      */
     baseUrl: string;
+
+    /**
+     * The api key to authenticate to Stack Overflow API
+     * @visibility backend
+     */
+    apiKey: string;
   };
 }