diff --git a/tsconfig.json b/tsconfig.json
index f033355..b9e4980 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -3,7 +3,7 @@
     "outDir": "build/cjs/",
     "target": "es2018", // Node.js 10 (https://github.com/microsoft/TypeScript/wiki/Node-Target-Mapping)
     "module": "commonjs",
-    "declaration": false
+    "declaration": true
   },
   "include": [
     "./lib/**/*"