diff --git a/Gemfile b/Gemfile
index 7d823a7..c033f74 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,6 +3,6 @@ ASpaceGems.setup if defined? ASpaceGems
 source 'http://rubygems.org'
 
 gem 'omniauth', '>= 1.6', :require => false
-gem 'hashie', '>= 1', :require => false
+gem 'hashie', '~>4', :require => false
 gem 'omniauth-cas', '>= 1.1', :require => false
-gem 'addressable', '>=2', :require => false
\ No newline at end of file
+gem 'addressable', '>=2', :require => false