diff --git a/Gemfile.lock b/Gemfile.lock
index 2e76cc1..b2155f8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (8.0.0)
     ast (2.4.0)
     backports (3.15.0)
@@ -159,7 +159,7 @@ GEM
       byebug (~> 10.0)
       pry (~> 0.10)
     psych (3.1.0)
-    public_suffix (3.0.2)
+    public_suffix (5.0.0)
     puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.2.3)