diff --git a/Gemfile.lock b/Gemfile.lock
index 610570f..093b456 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (~> 0.7)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (8.0.0)
     babel-source (5.8.35)
     babel-transpiler (0.7.0)
@@ -97,7 +97,7 @@ GEM
     nio4r (2.1.0)
     nokogiri (1.8.0)
       mini_portile2 (~> 2.2.0)
-    public_suffix (2.0.5)
+    public_suffix (4.0.7)
     rack (2.0.3)
     rack-test (0.6.3)
       rack (>= 1.0)