diff --git a/lib/validate.js b/lib/validate.js
index 89f2374..429965c 100644
--- a/lib/validate.js
+++ b/lib/validate.js
@@ -83,6 +83,14 @@ function getSchema(checkStyle) {
         }))
       }))
     ),
+    tags: Joi.array().items(Joi.object().keys({
+      name: joiRegex(tagConvention),
+      description: Joi.string(),
+      externalDocs: Joi.object().keys({
+        description: Joi.string(),
+        url: Joi.string()
+      })
+    })),
     parameters: Joi.object().pattern(/.*/, Joi.object().keys(parameterKeys)),
     definitions: Joi.any()
   });
@@ -90,12 +98,18 @@ function getSchema(checkStyle) {
   return schema;
 }
 
-function validate(checkStyleFile, specFile, callback) {
+function validate(checkStyleFile, specFile, options, callback) {
+  if (_.isFunction(options)) {
+    callback = options;
+    options = {};
+  }
+  options = _.extend({ abortEarly: false, allowUnknown: true }, options);
+
   Promise.join(getSpecPromise(specFile), getCheckStylePromise(checkStyleFile), callback,
       function(spec, checkStyle, callback) {
     return [spec, getSchema(checkStyle), callback];
   }).spread(function(spec, schema, callback) {
-    return Joi.validate(spec, schema);
+    return Joi.validate(spec, schema, options);
   }).then(function(result) {
     callback(null, result);
   }).catch(function(e) {