diff --git a/Gemfile.lock b/Gemfile.lock
index decddfe..d179862 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,8 +6,8 @@ GEM
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     colorator (1.1.0)
     concurrent-ruby (1.1.10)
     em-websocket (0.5.2)
@@ -71,7 +71,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.6)
+    public_suffix (5.0.1)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)