diff --git a/Gemfile.lock b/Gemfile.lock
index c40f9499..02a7de80 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,8 +6,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    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 (1.1.5)
     em-websocket (0.5.1)
@@ -61,7 +61,7 @@ GEM
       forwardable-extended (~> 2.6)
     pragmatic_segmenter (0.3.18)
       unicode
-    public_suffix (4.0.3)
+    public_suffix (5.0.0)
     rainbow (2.2.2)
       rake
     rake (12.3.0)