diff --git a/Gemfile.lock b/Gemfile.lock
index c7d719d..187beb4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.8)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     buftok (0.2.0)
     cookiejar (0.3.2)
     daemons (1.2.3)
@@ -33,6 +34,7 @@ GEM
     multi_json (1.11.2)
     multipart-post (2.0.0)
     naught (1.0.0)
+    public_suffix (3.1.1)
     simple_oauth (0.3.1)
     thread_safe (0.3.5)
     tweetstream (2.6.1)