diff --git a/Gemfile.lock b/Gemfile.lock
index f52e3a4..756f2ad 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,8 +9,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.9.0)
+      public_suffix (>= 2.0.2, < 8.0)
     builder (3.2.3)
     coffee-script (2.4.1)
       coffee-script-source