diff --git a/Gemfile.lock b/Gemfile.lock
index 322a6cab..d8b6420f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: http://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)
     adsf (1.2.1)
       rack (>= 1.0.0)
     buftok (0.2.0)
@@ -80,7 +80,7 @@ GEM
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.1)
+    public_suffix (4.0.6)
     racc (1.5.2)
     rack (2.2.3)
     rb-fsevent (0.10.2)