diff --git a/Gemfile.lock b/Gemfile.lock
index e61540d..e7f6a10 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -88,8 +88,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     ansi (1.5.0)
     area (0.10.0)
       fastercsv (~> 1.5)
@@ -285,7 +285,7 @@ GEM
     pry-byebug (3.7.0)
       byebug (~> 11.0)
       pry (~> 0.10)
-    public_suffix (3.1.0)
+    public_suffix (4.0.6)
     racc (1.5.2)
     rack (1.6.13)
     rack-test (0.6.3)