diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..5ec1f1c
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,3 @@
+declare function parse(header: string): Record<string, string>;
+
+export = parse;
diff --git a/package.json b/package.json
index 01302b9..ddd47ae 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,8 @@
   "author": "Luigi Pinca",
   "files": [
     "lib",
-    "index.js"
+    "index.js",
+    "index.d.ts"
   ],
   "main": "index.js",
   "repository": "lpinca/forwarded-parse",