diff --git a/Gemfile.lock b/Gemfile.lock
index 590ff5c..00dee25 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    addressable (2.5.0)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     builder (3.2.2)
     diff-lcs (1.1.3)
     docile (1.1.5)
@@ -39,7 +39,7 @@ GEM
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (>= 1.2, < 3)
-    public_suffix (2.0.5)
+    public_suffix (5.0.1)
     rack (2.0.1)
     rake (10.5.0)
     rdoc (5.0.0)