diff --git a/README.md b/README.md
index 767dae7..686458b 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,7 @@ Other properties can be used to customised the rendering.
 | type | enum | *optional* `image` or `audio` The type of initial captcha *(__defaults:__ image)*
 | tabindex | number | *optional* The tabindex on the element *(__default:__ 0)*
 | onExpired | func | *optional* callback when the challenge is expired and has to be redone by user. By default it will call the onChange with null to signify expired callback. |
+| stoken | string | *optional* set the stoken parameter, which allows the captcha to be used from different domains, see [reCAPTCHA secure-token] |
 
 ## Component API
 
@@ -104,3 +105,4 @@ render(
 [docs]: https://developers.google.com/recaptcha
 [js_api]: https://developers.google.com/recaptcha/docs/display#js_api
 [rb]: https://github.com/react-bootstrap/react-bootstrap/
+[reCAPTCHA secure-token]: https://developers.google.com/recaptcha/docs/secure_token
diff --git a/src/recaptcha.js b/src/recaptcha.js
index b7d940e..fae77d1 100644
--- a/src/recaptcha.js
+++ b/src/recaptcha.js
@@ -11,6 +11,7 @@ const ReCAPTCHA = React.createClass({
     tabindex: PropTypes.number,
     onExpired: PropTypes.func,
     size: PropTypes.oneOf(["compact", "normal"]),
+    stoken: PropTypes.string,
   },
 
   getInitialState() {
@@ -57,6 +58,7 @@ const ReCAPTCHA = React.createClass({
         tabindex: this.props.tabindex,
         "expired-callback": this.handleExpired,
         size: this.props.size,
+        stoken: this.props.stoken,
       });
       this.setState({
         widgetId: id,