1 files changed, 1 insertions, 0 deletions
diff --git a/Gemfile b/Gemfile
index a50d7e632ae..1e7c7869cba 100644
--- a/Gemfile
+++ b/Gemfile
@@ -45,6 +45,7 @@ gem 'akismet', '~> 2.0'
 gem 'devise-two-factor', '~> 3.0.0'
 gem 'rqrcode-rails3', '~> 0.1.7'
 gem 'attr_encrypted', '~> 3.0.0'
+gem 'u2f', '~> 0.2.1'
 
 # Browser detection
 gem "browser", '~> 1.0.0'