diff --git a/website/Gemfile.lock b/website/Gemfile.lock
index 9db2ebef04..3e3e53b9c9 100644
--- a/website/Gemfile.lock
+++ b/website/Gemfile.lock
@@ -6,8 +6,8 @@ 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 (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
     colorize (0.8.1)
     concurrent-ruby (1.1.4)
@@ -59,7 +59,7 @@ GEM
     parallel (1.12.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.3)
+    public_suffix (4.0.6)
     rake (12.3.0)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)