diff --git a/Gemfile.lock b/Gemfile.lock
index 03d187e..addda4f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     ast (2.4.0)
     atomic (1.1.99)
     builder (3.2.2)
@@ -58,7 +58,7 @@ GEM
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
-    public_suffix (4.0.1)
+    public_suffix (5.0.0)
     rack (2.0.7)
     rainbow (2.2.2)
       rake