diff --git a/Gemfile.lock b/Gemfile.lock
index 496b4f5..45e45d3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,8 +4,8 @@ GEM
     activesupport (3.2.22.5)
       i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     aws-eventstream (1.0.3)
     aws-sdk (2.11.282)
       aws-sdk-resources (= 2.11.282)
@@ -102,7 +102,7 @@ GEM
       sawyer (~> 0.8.0, >= 0.5.3)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (3.1.0)
+    public_suffix (4.0.7)
     rake (12.3.2)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)