diff --git a/Gemfile.lock b/Gemfile.lock
index f908f7c..b5cb94a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,8 +7,8 @@ PATH
 GEM
   remote: https://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)
     colorator (1.1.0)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
@@ -43,7 +43,7 @@ GEM
     mercenary (0.3.6)
     pathutil (0.14.0)
       forwardable-extended (~> 2.6)
-    public_suffix (2.0.4)
+    public_suffix (5.0.0)
     rake (10.1.0)
     rb-fsevent (0.9.8)
     rb-inotify (0.9.7)