diff --git a/types/webdriverio/index.d.ts b/types/webdriverio/index.d.ts
index 6f24ef5e2a..945de64846 100644
--- a/types/webdriverio/index.d.ts
+++ b/types/webdriverio/index.d.ts
@@ -312,9 +312,11 @@ declare namespace WebdriverIO {
         honorSystemProxy?: boolean;
         ensureCleanSession?: boolean;
 
-        //exclude
+        // Exclude
         exclude?: string[];
 
+        // Define which test specs should run (only on the desired capability)
+        specs?: string[];
     }
 
     interface Cookie {