diff --git a/Gemfile.lock b/Gemfile.lock
index 8173116..3aa2ead 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,8 +6,8 @@ GEM
       i18n (>= 0.7, < 2)
       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)
     ast (2.4.0)
     coderay (1.1.2)
     concurrent-ruby (1.0.5)
@@ -60,7 +60,7 @@ GEM
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.2)
+    public_suffix (4.0.6)
     rainbow (3.0.0)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)