diff --git a/Gemfile b/Gemfile
index 7df1ca7a1..d2b294fad 100644
--- a/Gemfile
+++ b/Gemfile
@@ -34,6 +34,7 @@ gem 'ruby-graphviz'
 gem 'smbhash'
 gem 'digest-sha3'
 gem 'digest-whirlpool'
+gem 'digest-siphash'
 
 #development only gems go here
 group :test, :development do