diff --git a/hello_app/Gemfile.lock b/hello_app/Gemfile.lock
index 5357939..7f2097c 100644
--- a/hello_app/Gemfile.lock
+++ b/hello_app/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (8.0.0)
     bindex (0.8.1)
     builder (3.2.4)
@@ -87,7 +87,7 @@ GEM
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     pg (0.20.0)
-    public_suffix (4.0.1)
+    public_suffix (5.0.0)
     puma (3.12.2)
     rack (2.0.7)
     rack-test (1.1.0)