diff --git a/venue_management.gemspec b/venue_management.gemspec
index f4c09fb..11078fe 100644
--- a/venue_management.gemspec
+++ b/venue_management.gemspec
@@ -4,7 +4,7 @@
 Gem::Specification.new do |s|
   s.name = "venue_management"
   s.version = "0.0.1"
-
+  s.add_dependency 'mongoid-enum'
   s.authors = ["chiu"]
   s.description = "Venue Management plugin."
   s.email = ["naruto0426@rulingcom.com"]