diff --git a/fbchat/utils.py b/fbchat/utils.py
index 6670f0d..e9e07f3 100644
--- a/fbchat/utils.py
+++ b/fbchat/utils.py
@@ -126,6 +126,9 @@ class ReqUrl(object):
     GRAPHQL = "https://www.facebook.com/api/graphqlbatch/"
     ATTACHMENT_PHOTO = "https://www.facebook.com/mercury/attachments/photo/"
     EVENT_REMINDER = "https://www.facebook.com/ajax/eventreminder/create"
+    EVENT_INFO = "https://www.facebook.com/ajax/eventreminder"
+    EVENT_CHANGE = "https://www.facebook.com/ajax/eventreminder/submit"
+    EVENT_PARTICIPATION = "https://www.facebook.com/ajax/eventreminder/rsvp"
     MODERN_SETTINGS_MENU = "https://www.facebook.com/bluebar/modern_settings_menu/"
     REMOVE_FRIEND = "https://m.facebook.com/a/removefriend.php"
     BLOCK_USER = "https://www.facebook.com/messaging/block_messages/?dpr=1"