diff --git a/Gemfile.lock b/Gemfile.lock
index 8c9d418..8a6269b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     bigdecimal (1.3.4)
     builder (3.2.3)
     bundler-unload (1.0.2)
@@ -37,7 +37,7 @@ GEM
     nokogiri (1.8.2)
       mini_portile2 (~> 2.3.0)
     parallel (1.12.1)
-    public_suffix (3.0.2)
+    public_suffix (4.0.7)
     rainpress (1.0.1)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)