diff --git a/gemfile_steep/Gemfile.lock b/gemfile_steep/Gemfile.lock
index c898e8228..8cd4e13d5 100644
--- a/gemfile_steep/Gemfile.lock
+++ b/gemfile_steep/Gemfile.lock
@@ -14,7 +14,7 @@ GEM
     ast (2.4.2)
     base64 (0.2.0)
     bigdecimal (3.1.8)
-    concurrent-ruby (1.3.3)
+    concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
     csv (3.3.0)
     drb (2.2.1)