diff --git a/Gemfile.lock b/Gemfile.lock
index f97e329..1bcc8c6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,8 +36,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (6.0.4)
     binding_of_caller (0.8.0)
       debug_inspector (>= 0.0.1)
@@ -105,7 +105,7 @@ GEM
       capybara (>= 2.1, < 4)
       cliver (~> 0.3.1)
       websocket-driver (>= 0.2.0)
-    public_suffix (3.1.1)
+    public_suffix (5.0.0)
     rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)