diff --git a/Gemfile.lock b/Gemfile.lock
index e50014fd..abd98ce8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,7 +49,8 @@ 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)
     babel-source (5.8.35)
     babel-transpiler (0.7.0)
@@ -209,6 +210,7 @@ GEM
       slop (~> 3.4)
     pry-nav (0.2.4)
       pry (>= 0.9.10, < 0.11.0)
+    public_suffix (5.0.0)
     r2 (0.2.6)
     racc (1.5.2)
     rack (1.6.13)