diff --git a/Gemfile.lock b/Gemfile.lock
index 17e22a7..0518e9a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 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)
     adsf (1.4.1)
       rack (>= 1.0.0, < 3.0.0)
     coderay (1.1.2)
@@ -61,7 +61,7 @@ GEM
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.3)
+    public_suffix (4.0.6)
     rack (2.0.6)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)