diff --git a/Gemfile.lock b/Gemfile.lock
index 2a0cdce..6d72b38 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.3.8)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     autoparse (0.3.3)
       addressable (>= 2.3.1)
       extlib (>= 0.9.15)
@@ -66,6 +67,7 @@ GEM
     pry-byebug (1.3.2)
       byebug (~> 2.7)
       pry (~> 0.9.12)
+    public_suffix (5.0.0)
     rake (10.3.2)
     retriable (1.4.1)
     signet (0.6.1)