diff --git a/Gemfile.lock b/Gemfile.lock
index 94a6ed5..be1872d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,8 +6,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       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)
     agoo (2.9.0)
     bundler-audit (0.6.1)
       bundler (>= 1.2.0, < 3)
@@ -35,7 +35,7 @@ GEM
     pry-byebug (3.7.0)
       byebug (~> 11.0)
       pry (~> 0.10)
-    public_suffix (3.1.1)
+    public_suffix (4.0.6)
     rake (12.3.3)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)