diff --git a/package.json b/package.json
index 5c6ed32cd20c7cb2635bbd43d2b24e5e6771e229..dc1b417593915de2069f55d6afd9f6950fff6c84 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
   ],
   "exports": {
     ".": {
+      "types": "./base64.d.ts",
       "import": "./base64.mjs",
       "require": "./base64.js"
     },