diff --git a/Gemfile.lock b/Gemfile.lock
index 1f35e15e..1e53df14 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,7 +36,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (6.0.3)
     autoprefixer-rails (6.3.6.2)
       execjs
@@ -179,6 +180,7 @@ GEM
       slop (~> 3.4)
     pry-nav (0.2.4)
       pry (>= 0.9.10, < 0.11.0)
+    public_suffix (3.1.1)
     rack (1.6.4)
     rack-protection (1.5.3)
       rack