diff --git a/tsconfig.json b/tsconfig.json
index e598ca0..80e473a 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -16,5 +16,5 @@
     "noImplicitReturns": true,
     "skipLibCheck": true
   },
-  "include": ["src"]
+  "include": ["src", "demo"]
 }