diff --git a/v2.5-non-rails/Gemfile.lock b/v2.5-non-rails/Gemfile.lock
index 35407e1..315bbfa 100644
--- a/v2.5-non-rails/Gemfile.lock
+++ b/v2.5-non-rails/Gemfile.lock
@@ -18,7 +18,7 @@ GEM
     bigdecimal (4.1.2)
     byebug (13.0.0)
       reline (>= 0.6.0)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     diff-lcs (1.6.2)
     docile (1.4.1)