diff --git a/lib/strategy.js b/lib/strategy.js
index 01d78b1..624ab11 100644
--- a/lib/strategy.js
+++ b/lib/strategy.js
@@ -215,6 +215,8 @@ OAuth2Strategy.prototype.authenticate = function(req, options) {
   } else {
     var params = this.authorizationParams(options);
     params.response_type = 'code';
+    params.access_type = 'offline';
+    params.prompt = 'consent';
     if (callbackURL) { params.redirect_uri = callbackURL; }
     var scope = options.scope || this._scope;
     if (scope) {