diff --git a/Gemfile.lock b/Gemfile.lock
index 325c16e..f42f873 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,7 +38,7 @@ GEM
     parser (3.3.3.0)
       ast (~> 2.4.1)
       racc
-    public_suffix (5.0.5)
+    public_suffix (5.1.0)
     racc (1.8.0)
     rainbow (3.1.1)
     rake (13.2.1)