diff --git a/Gemfile.lock b/Gemfile.lock
index 9c39fa9e..a3797cf4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -274,8 +274,8 @@ GEM
       tzinfo (~> 1.1)
     acts_as_list (0.9.19)
       activerecord (>= 3.0)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     anchored (1.1.0)
     arel (9.0.0)
     ast (2.4.2)
@@ -629,7 +629,7 @@ GEM
     premailer-rails (1.11.1)
       actionmailer (>= 3)
       premailer (~> 1.7, >= 1.7.9)
-    public_suffix (4.0.6)
+    public_suffix (5.0.0)
     puma (4.3.6)
       nio4r (~> 2.0)
     raabro (1.3.1)