diff --git a/tsconfig.json b/tsconfig.json
index a39c584..7e6abdc 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -13,6 +13,6 @@
         "skipLibCheck": true,
         "noImplicitReturns": false
     },
-    "include": ["src/**/*"],
+    "include": ["src/**/*", "src/index.d.ts"],
     "exclude": ["src/Unfinished/**/*"]
 }