diff --git a/Gemfile.lock b/Gemfile.lock
index 1a7ad629..d3bbdb06 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,7 +69,7 @@ GEM
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    public_suffix (5.0.5)
+    public_suffix (5.1.0)
     racc (1.8.0)
     rainbow (3.1.1)
     rake (13.2.1)