diff --git a/tsconfig.json b/tsconfig.json
index ff7e3ae..e8100df 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -15,5 +15,5 @@
         "skipLibCheck": true,
         "esModuleInterop": true
     },
-    "include": ["src"]
+    "include": ["src", "node_modules/arcgis-js-api/index.d.ts"]
 }