diff --git a/Gemfile b/Gemfile
index 2e069d34e..6bd45ab0c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'mini_mime', '~> 1.1.0'
 gem "actionpack-xml_parser"
 gem 'roadie-rails', '~> 3.4.0'
 gem 'marcel'
-gem 'mail', '~> 2.8.1'
+gem 'mail', '~> 2.9.0'
 gem 'nokogiri', '~> 1.18.3'
 gem 'i18n', '~> 1.14.1'
 gem 'rbpdf', '~> 1.21.4'