diff --git a/rails/Gemfile.lock b/rails/Gemfile.lock
index ca8d473..9137c56 100644
--- a/rails/Gemfile.lock
+++ b/rails/Gemfile.lock
@@ -46,8 +46,8 @@ 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)
     ancestry (3.0.2)
       activerecord (>= 3.2.0)
     api-pagination (4.8.1)
@@ -331,7 +331,7 @@ GEM
       ast (~> 2.4.0)
     posix-spawn (0.3.13)
     powerpack (0.1.2)
-    public_suffix (3.0.2)
+    public_suffix (5.0.0)
     puma (3.12.0)
     rack (2.0.5)
     rack-cors (1.0.2)