diff --git a/Gemfile.lock b/Gemfile.lock
index 39412a2..b38240a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,8 +6,8 @@ GEM
       i18n (~> 0.7)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     adsf (1.2.1)
       rack (>= 1.0.0)
     autoprefixer-rails (7.1.4)
@@ -67,7 +67,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    public_suffix (3.0.0)
+    public_suffix (4.0.6)
     rack (2.0.3)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)