diff --git a/Gemfile.lock b/Gemfile.lock
index 45afb97..7e0a3ce 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,12 +9,14 @@ PATH
 GEM
   remote: http://rubygems.org/
   specs:
-    addressable (2.3.2)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     crack (0.3.2)
     diff-lcs (1.1.3)
     libxml-ruby (2.6.0)
     mime-types (1.21)
     oauth (0.4.7)
+    public_suffix (5.0.0)
     rake (10.0.3)
     rest-client (1.6.7)
       mime-types (>= 1.16)