diff --git a/Gemfile.lock b/Gemfile.lock
index 751a761..aa376dc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -67,8 +67,8 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
       zeitwerk (~> 2.2, >= 2.2.2)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arbre (1.2.1)
       activesupport (>= 3.0.0)
     bcrypt (3.1.13)
@@ -186,7 +186,7 @@ GEM
     pg (1.2.3)
     polyamorous (2.3.2)
       activerecord (>= 5.2.1)
-    public_suffix (4.0.5)
+    public_suffix (5.0.0)
     puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.2.2)