diff --git a/Gemfile.lock b/Gemfile.lock
index 1835fd3..697a485 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,8 +44,8 @@ GEM
       i18n (~> 0.7)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     after_the_deadline (0.1.3)
       crack
     arel (8.0.0)
@@ -172,7 +172,7 @@ GEM
       slop (~> 3.4)
     pry-nav (0.2.4)
       pry (>= 0.9.10, < 0.11.0)
-    public_suffix (2.0.5)
+    public_suffix (4.0.7)
     puma (3.9.1)
     rack (2.0.5)
     rack-test (0.6.3)