diff --git a/Gemfile.lock b/Gemfile.lock
index b71e35a..faa1c98 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     colorator (0.1)
     colored (1.2)
     ethon (0.9.0)
@@ -54,6 +55,7 @@ GEM
       pkg-config (~> 1.1.7)
     parallel (1.9.0)
     pkg-config (1.1.7)
+    public_suffix (5.0.0)
     rb-fsevent (0.9.7)
     rb-inotify (0.9.7)
       ffi (>= 0.5.0)