diff --git a/Gemfile.lock b/Gemfile.lock
index b106387..2bc0713 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -67,8 +67,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (6.0.4)
     attr_encrypted (3.1.0)
       encryptor (~> 3.0.0)
@@ -237,7 +237,7 @@ GEM
       method_source (~> 0.9.0)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
-    public_suffix (3.0.2)
+    public_suffix (5.0.0)
     racc (1.6.0)
     rack (1.6.13)
     rack-protection (1.5.5)