diff --git a/Gemfile.lock b/Gemfile.lock
index 27caca6..f87ac0e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -103,8 +103,8 @@ GEM
     acts_as_indexed (0.8.3)
     acts_as_list (0.4.0)
       activerecord (>= 3.0)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     ahoy_matey (2.2.1)
       addressable
       browser (~> 2.0)
@@ -483,7 +483,7 @@ GEM
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
-    public_suffix (3.1.1)
+    public_suffix (4.0.6)
     quiet_assets (1.0.2)
       railties (>= 3.1, < 5.0)
     racc (1.5.2)