diff --git a/Gemfile.lock b/Gemfile.lock
index 52db085..cc4bc8e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,12 +1,12 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     diff-lcs (1.3)
     down (4.8.1)
       addressable (~> 2.5)
-    public_suffix (3.1.1)
+    public_suffix (4.0.6)
     rspec (3.7.0)
       rspec-core (~> 3.7.0)
       rspec-expectations (~> 3.7.0)