diff --git a/package.json b/package.json
index e35aafc..7645473 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   "scripts": {
     "start": "gulp dev",
     "prebuild": "rm -rf build",
-    "build": "microbundle --target web --external none",
+    "build": "microbundle --target web --external none --generateTypes false",
     "postbuild": "node scripts/print-bundle-size",
     "test": "cross-env NODE_ENV=test mocha --require @babel/register test/**/*.test.js --exit",
     "test:watch": "cross-env NODE_ENV=test mocha --require @babel/register --watch --reporter min test/*.test.js",
diff --git a/types/index.d.ts b/types/index.d.ts
index 910cffb..71c1d5e 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -74,11 +74,13 @@ declare class IdTokenVerifier {
   jwksURI: any;
   maxAge: any;
   __clock: any;
+
   /**
    * @callback verifyCallback
    * @param {?Error} err error returned if the verify cannot be performed
    * @param {?object} payload payload returned if the token is valid
    */
+
   /**
    * Verifies an id_token
    *
@@ -90,10 +92,25 @@ declare class IdTokenVerifier {
    *
    * @method verify
    * @param {string} token id_token to verify
-   * @param {string} [requestedNonce] nonce value that should match the one in the id_token claims
+   * @param {string} requestedNonce nonce value that should match the one in the id_token claims
    * @param {verifyCallback} cb callback used to notify the results of the validation
    */
-  verify(token: string, requestedNonce?: string, cb: verifyCallback): any;
+  verify(token: string, requestedNonce: string, cb: verifyCallback): any;
+
+  /**
+   * Verifies an id_token
+   *
+   * It will validate:
+   * - signature according to the algorithm configured in the verifier.
+   * - if `iss` and `aud` claims matches the configured issuer and audience
+   * - if token is not expired and valid (if the `nbf` claim is in the past)
+   *
+   * @method verify
+   * @param {string} token id_token to verify
+   * @param {verifyCallback} cb callback used to notify the results of the validation
+   */
+  verify(token: string, cb: verifyCallback): any;
+
   getRsaVerifier(iss: any, kid: any, cb: any): void;
   /**
    * @typedef DecodedToken