diff --git a/package.json b/package.json
index 23ceb22..2ef129c 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "0.5.4",
   "description": "A Tailwind CSS plugin for automatically styling plain HTML content with beautiful typographic defaults.",
   "main": "src/index.js",
+  "types": "src/index.d.ts",
   "files": [
     "src/*.js",
     "dist/"
diff --git a/src/index.d.ts b/src/index.d.ts
new file mode 100644
index 0000000..fc70688
--- /dev/null
+++ b/src/index.d.ts
@@ -0,0 +1,2 @@
+declare function plugin(options?: { className?: string, target?: 'modern' | 'legacy' }): Function
+export = plugin