diff --git a/Gemfile.lock b/Gemfile.lock
index fe6ad7a6..0515efad 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -40,8 +40,8 @@ GEM
       tzinfo (~> 1.1)
     acts_as_list (0.8.0)
       activerecord (>= 3.0)
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     annotate (2.7.1)
       activerecord (>= 3.2, < 6.0)
       rake (>= 10.4, < 12.0)
@@ -205,7 +205,7 @@ GEM
       pry (~> 0.10)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
-    public_suffix (2.0.5)
+    public_suffix (3.1.1)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
     rack (1.6.5)