diff --git a/Gemfile.lock b/Gemfile.lock
index add7b53..beb200b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     barby (0.6.6)
     buftok (0.2.0)
     concurrent-ruby (1.1.3)
@@ -34,7 +34,7 @@ GEM
       ttfunk (~> 1.5)
     prawn-emoji (2.1.1)
       prawn (>= 2.1.0)
-    public_suffix (3.0.3)
+    public_suffix (5.0.0)
     rmagick (2.16.0)
     simple_oauth (0.3.1)
     thread_safe (0.3.6)