diff --git a/Gemfile.lock b/Gemfile.lock
index ff80e44..bce94bb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,8 +11,8 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     byebug (10.0.0)
     codeclimate-test-reporter (1.0.8)
       simplecov (<= 0.13)
@@ -65,7 +65,7 @@ GEM
       byebug (~> 10.0)
       pry (~> 0.10)
     psych (3.0.2)
-    public_suffix (3.0.2)
+    public_suffix (5.0.1)
     rack (2.0.4)
     rack-protection (2.0.1)
       rack