diff --git a/Gemfile.lock b/Gemfile.lock
index d3fa132..06a34fb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 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)
     aws-sdk (2.11.43)
       aws-sdk-resources (= 2.11.43)
     aws-sdk-core (2.11.43)
@@ -133,7 +133,7 @@ GEM
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.2)
+    public_suffix (4.0.7)
     rspec (3.7.0)
       rspec-core (~> 3.7.0)
       rspec-expectations (~> 3.7.0)