diff --git a/Gemfile.lock b/Gemfile.lock
index f2b1aed..be5eafe 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     chronic (0.10.2)
     declarative (0.0.10)
     declarative-option (0.1.0)
@@ -32,7 +32,7 @@ GEM
     multi_json (1.13.1)
     multipart-post (2.1.1)
     os (1.0.1)
-    public_suffix (3.0.3)
+    public_suffix (5.0.0)
     representable (3.0.4)
       declarative (< 0.1.0)
       declarative-option (< 0.2.0)