diff --git a/Gemfile.lock b/Gemfile.lock
index 3789545..2457be0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     api-pagination (4.8.2)
     arel (8.0.0)
     builder (3.2.3)
@@ -135,7 +135,7 @@ GEM
       multi_xml (~> 0.5)
       rack (>= 1.2, < 3)
     pg (0.21.0)
-    public_suffix (3.1.0)
+    public_suffix (5.0.0)
     puma (3.12.1)
     rack (2.0.7)
     rack-pjax (1.1.0)