diff --git a/Gemfile.lock b/Gemfile.lock
index 7581feb..efd3f75 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,7 +8,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     byebug (9.1.0)
-    concurrent-ruby (1.1.10)
+    concurrent-ruby (1.3.7)
     diff-lcs (1.5.0)
     rake (13.0.6)
     rspec (3.11.0)