diff --git a/dummy/rails-5.2/Gemfile.lock b/dummy/rails-5.2/Gemfile.lock
index 7f97016..f294794 100644
--- a/dummy/rails-5.2/Gemfile.lock
+++ b/dummy/rails-5.2/Gemfile.lock
@@ -47,8 +47,8 @@ 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)
     archive-zip (0.11.0)
       io-like (~> 0.3.0)
     arel (9.0.0)
@@ -113,7 +113,7 @@ GEM
     nio4r (2.3.1)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
-    public_suffix (3.0.3)
+    public_suffix (4.0.7)
     puma (3.12.6)
     rack (2.2.3)
     rack-test (1.1.0)