diff --git a/Gemfile.lock b/Gemfile.lock
index 363d54c..2564443 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -123,7 +123,7 @@ GEM
       racc (~> 1.4)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (5.0.5)
+    public_suffix (5.1.1)
     racc (1.8.0)
     rake (13.2.1)
     rb-fsevent (0.11.2)