diff --git a/Gemfile.lock b/Gemfile.lock
index 83372ee..27bdead 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,8 +10,8 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     diff-lcs (1.3)
@@ -22,7 +22,7 @@ GEM
     hashdiff (1.0.1)
     hashie (4.1.0)
     multipart-post (2.1.1)
-    public_suffix (4.0.5)
+    public_suffix (5.0.0)
     rake (10.5.0)
     rspec (3.9.0)
       rspec-core (~> 3.9.0)