diff --git a/Gemfile.lock b/Gemfile.lock
index ef0ef45..c3d72ba 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 (2.3.8)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     airbrake (4.3.1)
       builder
       multi_json
@@ -203,6 +204,7 @@ GEM
       slop (~> 3.4)
     pry-rails (0.3.4)
       pry (>= 0.9.10)
+    public_suffix (4.0.7)
     rack (1.6.5)
     rack-test (0.6.3)
       rack (>= 1.0)