diff --git a/Gemfile.lock b/Gemfile.lock
index 7d075bb..657eeb9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,8 +6,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     autoprefixer-rails (6.7.7.2)
       execjs
     backports (3.18.1)
@@ -143,7 +143,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (4.0.5)
+    public_suffix (5.0.0)
     rack (2.2.3)
     rack-livereload (0.3.17)
       rack