diff --git a/Gemfile.lock b/Gemfile.lock
index 2c9dfe8..8580b31 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,8 +13,8 @@ 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)
     codeclimate-test-reporter (1.0.8)
       simplecov (<= 0.13)
     concurrent-ruby (1.0.5)
@@ -37,7 +37,7 @@ GEM
       httparty (~> 0.11)
       json-schema (~> 2.6)
       murmurhash3 (~> 0.1)
-    public_suffix (3.0.0)
+    public_suffix (4.0.6)
     rspec (3.7.0)
       rspec-core (~> 3.7.0)
       rspec-expectations (~> 3.7.0)