diff --git a/Gemfile.lock b/Gemfile.lock
index 329c25b..9fbda54 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,8 +6,8 @@ GEM
       i18n (~> 0.7)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.0)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     autoprefixer-rails (6.6.1)
       execjs
     backports (3.6.8)
@@ -33,7 +33,7 @@ GEM
     hashie (3.5.1)
     i18n (0.7.0)
     kramdown (1.13.2)
-    libv8 (3.16.14.19-x86_64-darwin-15)
+    libv8 (3.16.14.19)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -93,7 +93,7 @@ GEM
     padrino-support (0.13.3.3)
       activesupport (>= 3.1)
     parallel (1.10.0)
-    public_suffix (2.0.5)
+    public_suffix (5.0.0)
     rack (2.0.1)
     rake (11.1.2)
     rb-fsevent (0.9.8)