diff --git a/examples/rails/Gemfile.lock b/examples/rails/Gemfile.lock
index a0d99c3..7146ea5 100644
--- a/examples/rails/Gemfile.lock
+++ b/examples/rails/Gemfile.lock
@@ -56,8 +56,8 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
       zeitwerk (~> 2.2)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     bindex (0.8.1)
     bootsnap (1.4.6)
       msgpack (~> 1.0)
@@ -105,7 +105,7 @@ GEM
     nio4r (2.5.2)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
-    public_suffix (4.0.3)
+    public_suffix (5.0.0)
     puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.2.2)