diff --git a/lib/tsconfig.json b/lib/tsconfig.json
index f1c567f..b58e7b7 100644
--- a/lib/tsconfig.json
+++ b/lib/tsconfig.json
@@ -6,7 +6,8 @@
     "removeComments": true,
     "preserveConstEnums": true,
     "sourceMap": true,
-    "outDir": "./dist"
+    "outDir": "./dist",
+    "declaration": true
   },
   "include": [
     "./src/**/*"