diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 97a9100..ea0bcf2 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -7,8 +7,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.1)
       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)
     coffee-script (2.4.1)
       coffee-script-source
       execjs