diff --git a/Gemfile.lock b/Gemfile.lock
index 529bf05..98e8f49 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,13 +8,13 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     diff-lcs (1.3)
     json (2.1.0)
     mime-types (2.99.3)
     netrc (0.11.0)
-    public_suffix (3.0.2)
+    public_suffix (4.0.6)
     rake (10.5.0)
     rest-client (1.7.3)
       mime-types (>= 1.16, < 3.0)