diff --git a/Gemfile.lock b/Gemfile.lock
index acacfff..b7adb83 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,8 +44,8 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     acts_as_votable (0.11.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     angular-rails-templates (1.0.2)
       railties (>= 4.2, < 6)
       sprockets (>= 3.0, < 5)
@@ -150,7 +150,7 @@ GEM
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.2)
+    public_suffix (4.0.7)
     puma (3.11.4)
     rack (2.0.4)
     rack-cors (1.0.2)