diff --git a/Gemfile b/Gemfile
--- a/Gemfile
+++ b/Gemfile
@@ -50,7 +50,7 @@
 # jquery addition
 gem 'jquery-rails'
 gem 'jquery-ui-rails'
-gem 'jquery-timepicker-addon-rails'
+#gem 'jquery-timepicker-addon-rails'
 gem 'jquery-tablesorter'
 gem 'jquery-countdown-rails'
 
@@ -62,10 +62,10 @@
 gem 'bootstrap-switch-rails'
 gem 'bootstrap-toggle-rails'
 gem 'autoprefixer-rails'
-gem 'momentjs-rails'
+gem 'momentjs-rails', '>= 2.9.0'
 gem 'rails_bootstrap_sortable'
-gem 'bootstrap-datepicker-rails'
-gem 'bootstrap3-datetimepicker-rails'
+#gem 'bootstrap-datepicker-rails'
+gem 'bootstrap3-datetimepicker-rails', '~> 4.17.47'
 #gem 'jquery-datatables-rails'
 
 #----------- user interface -----------------
@@ -75,7 +75,7 @@
 #ace editor
 gem 'ace-rails-ap'
 #paginator
-gem 'will_paginate', '~> 3.0.7'
+#gem 'will_paginate', '~> 3.0.7'
 
 gem 'mail'
 gem 'rdiscount'