diff --git a/Gemfile b/Gemfile
index 978de6e..ede6cd5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-gem 'addressable', '= 2.3.4'
+gem 'addressable', '2.8.0'
 gem 'bcrypt', '=3.1.11'
 gem 'bcrypt-ruby', '=3.0.1'
 gem 'bundler', '>=1.7.4'
diff --git a/Gemfile.lock b/Gemfile.lock
index f7dd333..6d2a685 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.4)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     bcrypt (3.1.11)
     bcrypt-ruby (3.0.1)
     daemons (1.1.9)
@@ -59,6 +60,7 @@ GEM
     json_pure (1.8.0)
     multi_json (1.7.7)
     pg (0.21.0)
+    public_suffix (4.0.6)
     rack (1.6.12)
     rack-protection (1.5.5)
       rack
@@ -78,7 +80,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  addressable (= 2.3.4)
+  addressable (= 2.8.0)
   bcrypt (= 3.1.11)
   bcrypt-ruby (= 3.0.1)
   bundler (>= 1.7.4)