diff --git a/Gemfile.lock b/Gemfile.lock
index 1c6cc29..a955f96 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,8 +39,8 @@ GEM
     activesupport (3.2.22.5)
       i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     annotate (2.6.10)
       activerecord (>= 3.2, <= 4.3)
       rake (~> 10.4)
@@ -205,7 +205,7 @@ GEM
     pry-byebug (1.3.3)
       byebug (~> 2.7)
       pry (~> 0.10)
-    public_suffix (3.0.1)
+    public_suffix (3.1.1)
     puma (2.11.3)
       rack (>= 1.1, < 2.0)
     quiet_assets (1.0.3)