diff --git a/pymisp/api.py b/pymisp/api.py
index 023ddcb..087f7f5 100644
--- a/pymisp/api.py
+++ b/pymisp/api.py
@@ -233,6 +233,7 @@ class PyMISP(object):
         else:
             return session.post(url, data=event)
 
+
     def update_event(self, event_id, event, force_out=None):
         """
             Update an event
@@ -265,6 +266,7 @@ class PyMISP(object):
         url = urljoin(self.root_url, 'attributes/{}'.format(attribute_id))
         return session.delete(url)
 
+
     # ##############################################
     # ######### Event handling (Json only) #########
     # ##############################################
@@ -303,7 +305,7 @@ class PyMISP(object):
         if distribution is not None:
             distribution = int(distribution)
         # If None: take the default value of the event
-        if distribution not in [None, 0, 1, 2, 3]:
+        if distribution not in [None, 0, 1, 2, 3,5]:
             raise NewAttributeError('{} is invalid, the distribution has to be in 0, 1, 2, 3 or None'.format(distribution))
         if distribution is not None:
             to_return['distribution'] = distribution
@@ -354,6 +356,13 @@ class PyMISP(object):
         response = self.update_event(event['Event']['id'], event, 'json')
         return self._check_response(response)
 
+    def add_tag(self,event, tag):
+        session = self.__prepare_session('json')
+        to_post = {'request': {'Event':{'id': event['Event']['id'], 'tag': tag}}}
+        response = session.post(urljoin(self.root_url, 'events/addTag'), data=json.dumps(to_post))
+
+        return self._check_response(response)
+
     # ##### File attributes #####
 
     def _send_attributes(self, event, attributes, proposal=False):