diff --git a/bootstrap3-datetimepicker-rails.gemspec b/bootstrap3-datetimepicker-rails.gemspec
index 4f3ce13..e21d738 100644
--- a/bootstrap3-datetimepicker-rails.gemspec
+++ b/bootstrap3-datetimepicker-rails.gemspec
@@ -18,5 +18,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'bundler', '~> 1.3'
   spec.add_development_dependency 'rake'
 
-  spec.add_runtime_dependency 'momentjs-rails', '>= 2.8.1'
+  spec.add_runtime_dependency 'momentjs-rails', '>= 2.9.0'
 end