diff --git a/Gemfile.lock b/Gemfile.lock
index c868482..5c58f31 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     backports (3.15.0)
     bcrypt_pbkdf (1.0.1)
     berkshelf (7.0.8)
@@ -203,7 +203,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.1.0)
+    public_suffix (5.0.0)
     rack (2.2.3)
     rake (13.0.1)
     rb-fsevent (0.10.3)