diff --git a/tests/rspec/Gemfile.lock b/tests/rspec/Gemfile.lock
index 69ac847..f38e1d4 100644
--- a/tests/rspec/Gemfile.lock
+++ b/tests/rspec/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     capybara (2.7.1)
       addressable
       mime-types (>= 1.16)
@@ -26,6 +27,7 @@ GEM
       capybara (~> 2.1)
       cliver (~> 0.3.1)
       websocket-driver (>= 0.2.0)
+    public_suffix (4.0.6)
     rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)